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tle4678 5 v fixed output voltage TLE4678GM tle4678el low drop out linear voltage regulator automotive power datasheet rev. 1.2, 2014-10-17
tle4678 datasheet 2 rev. 1.2, 2014-10-17 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 pin assignment pg-dso-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 pin definitions and functions pg-dso-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.3 pin assignment pg-ssop-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.4 pin definitions and functions pg-ssop-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 general product characteristic s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.2 functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5 voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.1 description voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.2 electrical characteristics voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5.3 typical performance characteristics volt age regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6 current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.1 electrical characteristics current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.2 typical performance characteristics current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7 reset function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.1 description reset function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.2 electrical characteristics reset function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.3 typical performance characteristics reset function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8 watchdog function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 8.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 8.2 electrical characteristics watchdog function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8.3 typical performance characteristics st andard watchdog function . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 9 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9.1 application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9.2 selection of external components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 9.3 thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 9.4 reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 10 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 11 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 table of contents
type package marking TLE4678GM pg-dso-14 TLE4678GM tle4678el pg-ssop-14 tle4678 pg-dso-14 pg-ssop-14 datasheet 3 rev. 1.2,, 2014-10-17 low drop out linear voltage regulator 5 v fixed output voltage tle4678 1 overview features ? output voltage 5 v 2% ? current capability 200 ma ? ultra low current consumption ? very low dropout voltage ? watchdog circuit for monitoring a microprocessor with programmable load-depen dent activating threshold ? reset circuit sensing the output voltage with programmable switchin g threshold and delay time ? reset output active low down to v q = 1 v ? separated reset and watchdog output ? excellent line transient robustness ? maximum input voltage -42 v v i +45 v ? reverse polarity protection ? short circuit protected ? overtemperature shutdown ? automotive temperature range -40 c t j 150 c ? available in a small thermally enhanced pg-ssop-14 package ? green product (rohs compliant) ? aec qualified description the TLE4678GM is a monolithic integrat ed low dropout fi xed output voltage regulator for loads up to 200 ma. an input voltage of up to 45 v is regulated to an ou tput voltage of 5 v. the integrated reset and watchdog function, as well as several protection circuits, comb ined with a wide operating temperature range offered by the TLE4678GM make it suitable fo r supplying microprocessor system s in automotive environments. the watchdog circuitry will be disabled in case the output current drops below a programmable threshold, enabling a microcontroller to switch to stand-by mode. modifying the reset threshold is possible by an optional resistor divider. the TLE4678GM is available in a pg-d so-14 package which makes it pin-co mpatible to the tle4278, as well as in a small thermally enhanced pg-ssop-14 exposed pad package.
datasheet 4 rev. 1.2, 2014-10-17 tle4678 block diagram 2 block diagram for details on the circuit blocks see th e respective section in this datasheet. figure 1 block diagram and simplified application circuit reset and watchdog generator bandgap reference protection circuits gnd d wadj radj wi q wo ro c q c d load e. g. micro controller xc22xx gnd i supply regulated output voltage blo ckdia gram _a ppcircuit1 .vsd tle 4678
datasheet 5 rev. 1.2, 2014-10-17 tle4678 pin configuration 3 pin configuration 3.1 pin assignment pg-dso-14 figure 2 pin assignment pg-dso-14 package 3.2 pin definitions and functions pg-dso-14 pin symbol function 1wo watchdog output open collector outp ut with an internal pull-up resistor to the output q. an additional external pull-up resi stor to the output q is optional. leave open if the watchdog function is not needed. 2wadj watchdog activating threshold adjust an external resistor to gnd determin es the watchdog ac tivating threshold. connect directly to gnd for disabling the watchdog. connect directly to gnd if the watchdog function is not needed. connect to output q via 270 k ? resistor for permanently activating the watchdog. 3, 4, 5, 10, 11, 12 gnd ic ground interconnect the gnd pins on pcb. connect to heat sink area. 6d reset delay and watchdog timing connect a ceramic capacitor d (pin 6) to gnd for reset delay and watchdog timing adjustment. leave only open if both the reset and the watchdog function are not needed. p inout_s o14 .vsd 1 gnd 2 gnd 3 d 14 13 12 gnd gnd 4 11 q gnd gnd 10 9 8 5 6 7wi i ro wadj wo radj
datasheet 6 rev. 1.2, 2014-10-17 tle4678 pin configuration 3.3 pin assignment pg-ssop-14 figure 3 pin assignment pg-ssop-14 package 7radj reset switching threshold adjust for reset threshold adjustment connect to a voltage divider from output q to gnd. for triggering the reset at the internally determined threshold, connect this pin directly to gnd. connect directly to gnd if the reset function is not needed. 8wi watchdog input positive edge triggered input, usab le for microcontroller monitoring. connect to gnd if the watchd og function is not needed. 9q 5 v regulator output block to gnd with a capacitor close to th e ic pins, respecting capacitance and esr requirements given in the chapter 4.2 functional range . 13 i regulator input and ic supply for compensating line influences, a capa citor to gnd close to the ic pins is recommended. 14 ro reset output open collector outp ut with an internal pull-up resistor to the output q. an additional external pull-up resi stor to the output q is optional. leave open if the reset function is not needed. pin symbol function pinout_ssop14.vsd wo ro n.c. wadj gnd d n.c. radj n.c. i n.c. q n.c. wi 1 2 3 4 5 6 7 14 13 12 11 10 9 8
datasheet 7 rev. 1.2, 2014-10-17 tle4678 pin configuration 3.4 pin definitions and functions pg-ssop-14 pin symbol function 1wo watchdog output open collector outp ut with an internal pull-up resistor to the output q. an additional external pull-up resi stor to the output q is optional. leave open if the watchdog function is not needed. 3wadj watchdog activating threshold adjust an external resistor to gnd determin es the watchdog ac tivating threshold. connect directly to gnd for disabling the watchdog. connect directly to gnd if the watchdog function is not needed. connect to output q via 270 k ? resistor for permanently activating the watchdog. 4gnd ic ground interconnect with the exposed pad and heatsink area on pcb. 5d reset delay and watchdog timing connect a ceramic capacitor d (pin 5) to gnd for reset delay and watchdog timing adjustment. leave only open if both, the reset and the watchdog function are not needed. 7radj reset switching threshold adjust for reset threshold adjustment connect to a voltage divider from output q to gnd. for triggering the reset at the internally determined threshold, connect this pin directly to gnd. connect directly to gnd if the reset function is not needed. 8wi watchdog input positive edge triggered input, usab le for microcontroller monitoring. connect to gnd if the watchd og function is not needed. 10 q 5 v regulator output block to gnd with a capacitor close to th e ic pins, respecting capacitance and esr requirements given in the chapter 4.2 functional range . 12 i regulator input and ic supply for compensating line influences, a capa citor to gnd close to the ic pins is recommended. 14 ro reset output open collector outp ut with an internal pull-up resistor to the output q. an additional external pull-up resi stor to the output q is optional. leave open if the reset function is not needed. 2, 6, 9, 11, 13 n. c. internally not connected connection to gnd on pcb recommended. exposed pad connect to heat sink ar ea on pcb. interconnect with gnd.
datasheet 8 rev. 1.2, 2014-10-17 tle4678 general product characteristics 4 general product characteristics 4.1 absolute maximum ratings note: stresses above the ones listed here may cause pe rmanent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. integrated protection functions are designed to prevent ic destructio n under fault conditions described in the data sheet. fault conditions are considered as ?outside? norm al operating range. protection functions are not designed for continuous repetitive operation. absolute maximum ratings 1) t j = -40 c to +150 c; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) 1) not subject to production test, specified by design. parameter symbol limit values unit conditions number min. max. voltage rating regulator input and ic supply i v i -42 45 v ? 4.1.1 regulator output q v q -1 7 v ? 4.1.2 reset output ro v ro -0.3 7 v ? 4.1.3 reset delay and watchdog timing d v d -0.3 7 v ? 4.1.4 reset switching threshold adjust radj v radj -0.3 7 v ? 4.1.5 watchdog input wi v wi -0.3 7 v ? 4.1.6 watchdog output wo v wo -0.3 7 v ? 4.1.7 watchdog activating threshold adjust wadj v wadj -0.3 7 v ? 4.1.8 temperature junction temperature t j -40 150 c ? 4.1.9 storage temperature t stg -55 150 c ? 4.1.10 esd susceptibility esd resistivity v esd,hbm -3 3 kv human body model 2) pin 13 (input) only. 2) esd susceptibility, human body model ?hbm? according to eia/jesd 22-a114b. 4.1.11 -2 2 kv human body model 2) all pins except pin 13 (input) 4.1.12 v esd,cdm -1 1 kv charged device model 3) 3) esd susceptibility, charged device model ?cdm? according to eia/jesd22-c101 or esda stm5.3.1. 4.1.13
datasheet 9 rev. 1.2, 2014-10-17 tle4678 general product characteristics 4.2 functional range note: within the functional range the ic operates as described in the circuit de scription. the electrical characteristics are specifie d within the conditions given in the related electrical characteristics table. parameter symbol limit values unit conditions number min. max. input voltage range for normal operation v i(nor) v q + v dr 45 v 1) 1) for specification of the output voltage v q and the dropout voltage v dr , see chapter 5 voltage regulator . 4.2.1 extended input voltage range v i(ext) 3.3 45 v 2) 2) the output voltage v q will follow the input voltage, but is outside the specified range. for details see chapter 5 voltage regulator . 4.2.2 input voltage transient immunity d v i /d t -10 20 v/s d v i 10 v; v i > 9 v; no trigger of wo, ro. 3) 3) transient measured directly at the input pin. not subject to production test, specified by design. 4.2.3 junction temperature t j -40 150 c ? 4.2.4 output capacitor requirements c q 10 ? f ? 4) 4) the minimum output capacitance requi rement is applicable for a worst case capacitance tolerance of 30%. 4.2.5 esr cq ?3 ? ? 5) 5) relevant esr value at f = 10 khz. 4.2.6
datasheet 10 rev. 1.2, 2014-10-17 tle4678 general product characteristics 4.3 thermal resistance note: this thermal data was generated in accordance with jedec jesd51 standards. for more information, go to www.jedec.org . parameter symbol limit values unit conditions number min. typ. max. TLE4678GM (pg-dso-14) junction ? soldering point r thjsp ? 27 ? k/w pins 3 - 5 and 10 - 12 fixed to t a 1) 1) not subject to production test; specified by design. 4.3.1 junction ? ambient r thja ? 104 ? k/w footprint only 1) 2) 2) specified r thja value is according to jedec jesd 51-3 at natural convection on fr4 1s0p board; the product (chip+package) was simulated on a 76.2 114.3 1.5 mm 3 board with 1 copper layer (1 x 70m cu). 4.3.2 ? 73 ? k/w 300 mm 2 pcb heatsink area 1) 2) 4.3.3 ? 65 ? k/w 600 mm 2 pcb heatsink area 1) 2) 4.3.4 ?63?k/w2s2p pcb 1) 3) 3) specified r thja value is according to jedec jesd 51-2,-5,-7 at natural convection on fr4 2s2p board; the product (chip+package) was simulated on a 76.2 x 114.3 x 1.5 mm3 board with 2 inner co pper layers (2 x 70m cu, 2 x 35m cu). where applicable a thermal via array under the exposed pad contacted the first inner copper layer. 4.3.5 tle4678el (pg-ssop-14) junction to case r thjc ?10?k/w? 1) 4.3.6 junction to ambient r thja ? 140 ? k/w footprint only 1) 2) 4.3.7 ? 63 ? k/w 300mm 2 pcb heatsink area 1) 2) 4.3.8 ? 53 ? k/w 600mm 2 pcb heatsink area 1) 2) 4.3.9 ?47?k/w2s2p pcb 1) 3) 4.3.10
datasheet 11 rev. 1.2, 2014-10-17 tle4678 voltage regulator 5 voltage regulator 5.1 description voltage regulator the output voltage v q is controlled by comparing a portion of it to an internal reference and driving a pnp pass transistor accordingly. saturati on control as a function of the load current prevents any oversaturation of the pass element. the control loop st ability depends on th e output capacitor c q , the load current, the chip temperature and the poles/zeros introduced by the integr ated circuit. to ensure st able operation, the output capacitor?s capacitance and its equivalent series resistor esr requirements given in the table ?functional range? on page 9 have to be maintained. for details see also the typical performance graph ?output capacitor series resistor esr cq vs. output current i q ?. also, the output capacitor shall be sized to buffer load transients. an input capacitor c i is not needed for the control loop stability, but recommended to buffer line influences. connect the capacitors close to the ic terminals. protection circuitry prevents the ic as well as the application from destruct ion in case of catastrophic events. these safeguards contain output curr ent limitation, reverse po larity protection as well as thermal shutdown in case of overtemperature. in order to avoid excessive power dissipation that could never be handled by the pass element and the package, the maximum output current is decreased at input voltages above v i =22v. the thermal shutdown circuit prevents the ic from immediate destruction under fault conditions (e.g. output continuously short-circuited) by switching off the powe r stage. after the chip has cooled down, the regulator restarts. this leads to an oscillatory behaviour of th e output voltage until the fa ult is removed. however, a junction temperature above 150 c is outside the maximum rating and th erefore reduces the ic lifetime. the TLE4678GM allows a negative suppl y voltage. however, several small currents are flowing into the ic increasing its junction temperature. this has to be considered for the thermal design, respecting that the thermal protection circuit is not operat ing during reverse polarity condition. figure 4 block diagram voltage regulator circuit bandgap reference gnd q i b lockdiagram _v oltageregulator .vsd saturation control current limitation temperature shutdown c q load supply c i regulated output voltage i q i i v q + v i +
datasheet 12 rev. 1.2, 2014-10-17 tle4678 voltage regulator figure 5 output voltage vs. input voltage 5.2 electrical characteristics voltage regulator electrical characteristics: voltage regulator v i = 13.5 v, t j = -40 c to +150 c, all voltages with respect to ground, direction of currents as shown in figure 4 (unless otherwise specified) parameter symbol limit values unit conditions number min. typ. max. output voltage v q 4.9 5.0 5.1 v 0 ma i q 200 ma; 8 v v i 18 v 5.2.1 0 ma i q 150 ma; 6 v v i 18 v 5.2.2 0 ma i q 100 ma; 18 v v i 32 v t j 105 c 1) 2) 5.2.3 0 ma i q 10 ma; 32 v v i 45 v t j 105 c 1) 2) 5.2.4 0.3 ma i q 100 ma; 18 v v i 32 v 1) 5.2.5 0.3 ma i q 10 ma; 32 v v i 45 v 1) 5.2.6 load regulation steady-state |d v q,load |? 5 30 mv i q = 1 ma to 150 ma; v i = 6 v 5.2.7 line regulation steady-state |d v q,line |? 5 20 mv v i = 6 v to 32 v; i q = 5 ma 5.2.8 power supply ripple rejection psrr 60 65 ? db f ripple = 100 hz; v ripple = 1 vpp 2) 5.2.9 dropout voltage v dr = v i - v q v dr ? 90 200 mv i q = 50 ma 3) 5.2.10 ? 165 350 mv i q = 150 ma 3) 5.2.11 output current limitation i q,max 201 350 500 ma 0 v v q 4.8 v 5.2.12 reverse current i q -1.5 -0.7 ? ma v i = 0 v; v q = 5 v 5.2.13 v t diagram_output-inputvoltage.svg v q,nom v i v dr v q d v q d t i load c q d v q d t i q,max - i load c q v i(ext),min
datasheet 13 rev. 1.2, 2014-10-17 tle4678 voltage regulator reverse current at negative input voltage i i -2 -1 ? ma v i = -16 v; v q = 0 v 5.2.14 -5 -3 ? ma v i = -42 v; v q = 0 v 5.2.15 overtemperature shutdown threshold t j,sd 151 ? 200 c t j increasing 2) 5.2.16 overtemperature shutdown threshold hysteresis t j,hy ?20?k t j decreasing 2) 5.2.17 1) see typical performance graph for details. 2) parameter not subject to production test; specified by design. 3) measured when the output voltage v q has dropped 100 mv fr om its nominal value. electrical characteristics: voltage regulator (cont?d) v i = 13.5 v, t j = -40 c to +150 c, all voltages with respect to ground, direction of currents as shown in figure 4 (unless otherwise specified) parameter symbol limit values unit conditions number min. typ. max.
datasheet 14 rev. 1.2, 2014-10-17 tle4678 voltage regulator 5.3 typical performance characteristics voltage regulator output voltage v q vs. junction temperature t j output current limitation i q,max vs. input voltage v i output capacitor series resistor esr cq vs. output current i q -40 t j [ c ] -20 20 40 80 100 v q [v] vq-tj.vsd 5.00 4.98 4.96 5.02 060 140 120 0 v i [v] 20 30 i q,max [ma] so a.v s d 300 200 100 400 10 40 t j = 125 c t j = 25 c esr 10 u-iq .v s d 1 0.1 0.01 esr cq [ ] 0 i q [ma] 80 120 40 160 100 10 c q 10 f; 6v v i 28 v; -40 c t j 150 c stable region
datasheet 15 rev. 1.2, 2014-10-17 tle4678 voltage regulator dropout voltage v dr vs. output current i q reverse output current i q vs. output voltage v q dropout voltage v dr vs. junction temperature t j reverse current i i vs. input voltage v i 0.2 i q [ma] 110 vdr- iq.v sd 100 20 200 100 v dr [m v] t j = 25 c t j = 125 c 0 v q [v] 3.2 4 .8 i q [ma] iq-vq @ vi=0. vsd -0.6 -0.8 -0.4 1.6 6 0 v i = 0 v t j = 150 c t j = -40 c -40 t j [ c ] -20 20 40 80 100 v dr [mv] vdr- tj.vsd 150 100 50 200 0 60 140 120 300 i q = 50 ma i q = 150 ma i q = 200 a v i [v] -24 -16 i i [ma] ii-vi@vq =0.v s d -1.5 -2 -2.5 -1 -32 -8 0 v q = 0 v t j = 150 c t j = 25 c t j = -40 c 0
datasheet 16 rev. 1.2, 2014-10-17 tle4678 current consumption 6 current consumption 6.1 electrical characteristics current consumption figure 6 parameter definition electrical characteristics: current consumption v i = 13.5 v, t j = -40 c to +150 c, all voltages with respect to ground, direction of currents as shown in figure 6 (unless otherwise specified). parameter symbol limit values unit conditions number min. typ. max. current consumption watchdog deactivated i q = i i - i q i q1 ? 7080a i q 200 a; t j 25 c watchdog deactivated 6.1.1 ? 7785a i q 200 a; t j 85 c watchdog deactivated 6.1.2 current consumption i q = i i - i q i q2 ? 117 130 a i q 2 ma; t j 25 c watchdog activated 6.1.3 ? 127 135 a i q 2 ma; t j 85 c watchdog activated 6.1.4 ?12ma i q = 50 ma 6.1.5 ?5.58ma i q = 150 ma 6.1.6 gnd q i currentconsumption _ p arameterdefinition .vsd c q load supply c i regulated output voltage i q i i v q + v i + i q voltage regulator
datasheet 17 rev. 1.2, 2014-10-17 tle4678 current consumption 6.2 typical performance characteristics current consumption current consumption i q vs. junction temperature t j current consumption i q vs. output current i q current consumption i q vs. junction temperature t j current consumption i q vs. input voltage v i iq-tj.vsd 1 0.1 0.01 10 i q [m a] -40 t j [c] -20 20 40 80 100 0 60 140 120 v i = 13 .5 v watchdog activated i q = 50 ma i q = 150 ma i q = 2 ma 0.2 i q [m a] 110 iq-iq.vsd 1 0.1 0.01 10 100 i q [m a] v i = 13.5 v t j = 125 c v i = 13 .5 v t j = 25 c -40 t j [c] 40 80 i q [a] iq100u_tj.vsd 80 60 40 100 0 120 i q = 100 a v i = 13.5 v watchdog deactivated 140 150 0 v i [v] 46 i q [ma] iq-vi.v s d 12 8 4 16 28 r l = 500 24 t j = 25 c r l = 50
datasheet 18 rev. 1.2, 2014-10-17 tle4678 reset function 7 reset function 7.1 description reset function the reset function prov ides several features: output undervoltage reset an output undervoltage condition is indicated by setting the reset output ?ro? to ?l ow?. this signal might be used to reset a microcontrolle r during low supply voltage. power-on reset delay time the power-on reset delay time t d,pwr-on allows a microcontroller and oscillat or to start up. this delay time is the time period from exceeding th e upper reset switching threshold v rt,hi until the reset is released by switching the reset output ?ro? from ?low ? to ?high?. the power-on reset delay time t d,pwr-on is defined by an external delay capacitor c d connected to pin ?d? which is charged up by the delay capacitor charge current i d,ch starting from v d = 0 v. in case a power-on reset delay time t d,pwr-on different from the value for c d = 100nf is required, the delay capacitor?s value can be derived from the specified value given in item 7.2.15 : c d = 100nf t d,pwr-on / t d,pwr-on,100nf (7.1) with ? t d,pwr-on : desired power-on reset delay time ? t d,pwr-on,100nf : power-on reset delay time specified in item 7.2.15 ? c d : delay capacitor required. the formula is valid for c d 10nf. for precise timing calculations consider a lso the delay capacitor?s tolerance. undervoltage reset delay time unlike the power-on reset delay time, the undervoltage reset delay time t d considers a short output undervoltage event where the delay capacitor c d is assumed to be discharged to v d = v dst,lo only before the charging sequence starts. therefore, the undervoltage reset delay time t d is defined by the delay capacitor charge current i d,ch starting from v d = v dst,lo and the external delay capacitor c d . a delay capacitor c d for a different undervoltage reset delay time as specified in item 7.2.14 can be calculated similar as above: c d = 100nf t d / t d,100nf (7.2) with ? t d : desired undervoltage reset delay time ? t d,100nf : power-on reset delay time specified in item 7.2.14 ? c d : delay capacitor required the formula is valid for c d 10nf. for precise timing calculations consider a lso the delay capacitor?s tolerance.
datasheet 19 rev. 1.2, 2014-10-17 tle4678 reset function reset reaction time in case the output voltage of th e regulator drops below the output undervoltage lower reset threshold v rt,lo , the delay capacitor c d is discharged rapidly. once the delay ca pacitor?s voltage has reached the lower delay switching threshold v dst,lo , the reset output ?ro? will be set to ?low?. additionally to the delay capacitor discharge time t rr,d , an internal reaction time t rr,int applies. hence, the total reset reaction rime t rr,total becomes: t rr,total = t rr,int + t rr,d (7.3) with ? t rr,total : total reset reaction time ? t rr,int : internal reset reaction time; see item 7.2.16 . ? t rr,d : delay capacitor discharge time. for a capacitor c d different from the value specified in item 7.2.17 , see typical performance graphs. reset output ?ro? the reset output ?ro? is an open co llector output with an integrated pu ll-up resistor. in case a lower-ohmic ?ro? signal is desired, an external pull-up resistor to the output ?q? can be co nnected. since the maximum ?ro? sink current is limited, the optional external resistor r ro,ext must not be lower than specified in item 7.2.8 . reset output ?ro? low for v q 1v in case of an undervoltage reset condit ion reset output ?ro? is held ?low? for v q 1 v, even if the input voltage v i is 0 v. this is achieved by supplying the reset circuit from the output capacitor. reset adjust function the undervoltage reset switching threshold can be adjusted according to the application?s needs by connecting an external voltage divider ( r adj1 , r adj2 ) at pin ?radj?. for selecting the default threshold connect pin ?radj? to gnd. the reset adjustment range is given in item 7.2.6 . when dimensioning the voltage divider, take into cons ideration that there will be an additional current constantly flowing through the resistors. with a voltage divider connected , the reset switching threshold v rt,adj is calculated as follows: v rt,adj = v radj,th ( r adj,1 + r adj,2 ) / r adj,2 (7.4) with ? v rt,adj : desired reset switching threshold. ? r adj,1 , r adj,2 : resistors of the external voltage divider, see figure 7 . ? v radj,th : reset adjust switching threshold given in item 7.2.5 .
datasheet 20 rev. 1.2, 2014-10-17 tle4678 reset function figure 7 block diagram reset circuit figure 8 timing diagram reset gnd q i b l ockd i agram _r eseta dj ust .vsd or supply ro v dst int. supply i d,ch i dr , dsch v radj ,t h radj control d c d reset optional opti onal c q vdd micro- controller gnd r adj ,1 r adj ,2 r ro i ro i radj v i t v q t v rt,lo v rt,hi v ro t i mi n g di a g ra m_ re se t. vs t v ro,low 1 v 1v t rr,total t d ther mal shutdown input voltage dip t rr,total t d t d t < t rr,blank t d under- voltage spike at output over- load t rr,total v rh v dst,lo v dst,hi t v d
datasheet 21 rev. 1.2, 2014-10-17 tle4678 reset function 7.2 electrical characteristics reset function electrical characteristics: reset function v i = 13.5 v, t j = -40 c to +150 c, all voltages with respect to ground, direction of currents as shown in figure 7 (unless otherwise specified). parameter symbol limit values unit conditions number min. typ. max. output undervoltage reset comparator default values (pin radj = gnd) output undervoltage reset lower switching threshold v rt,lo 4.6 4.7 4.8 v v i = 0 v v q decreasing radj = gnd 7.2.1 output undervoltage reset upper switchin g threshold v rt,hi 4.7 4.8 4.9 v v i within operating range v q increasing radj = gnd 7.2.2 output undervoltage reset switching hysteresis v rt,hy 60 120 ? mv v i within operating range radj = gnd. 7.2.3 output undervoltage reset headroom v rh 250 300 ? mv calculated value: v q - v rt,lo v i within operating range i q = 50 ma radj = gnd 7.2.4 reset threshold adjustment reset adjust lower switching threshold v radj,th 1.176 1.20 1.224 v v i = 0 v 3.2 v v q < 5 v 7.2.5 lower reset threshold adjustment range 1) v rt,adj 3.20 ? v rt,lo v? 7.2.6 reset output ro reset output low voltage v ro,low ? 0.2 0.4 v v i = 0 v; r ro,ext = 3.3 k ? ; 1v v q v rt,low 7.2.7 reset output external pull-up resistor to q r ro,ext 3? ? k ? v i = 0 v; v ro = 0.4 v 1v v q v rt,low 7.2.8 reset output internal pull-up resistor r ro 20 30 40 k ? internally connected to q 7.2.9 reset delay timing upper delay switching threshold v dst,hi ? 1.21 ? v ? 7.2.10 lower delay switching threshold v dst,lo ? 0.30 ? v ? 7.2.11
datasheet 22 rev. 1.2, 2014-10-17 tle4678 reset function delay capacitor charge current i d,ch ? 2.8 ? a v d = 1 v 7.2.12 delay capacitor reset discharge current i dr,dsch ? 80 ? ma v d = 1 v 7.2.13 undervoltage reset delay time t d,100nf 23 31 41 ms calculated value; c d = 100 nf 2) ; c d discharged to v dst,lo 7.2.14 power-on reset delay time t d,pwr- on,100nf 30 43 56 ms calculated value; c d = 100 nf 2) ; c d discharged to 0 v; 7.2.15 internal reset reaction time t rr,int ?915s c d = 0 nf 7.2.16 delay capacitor discharge time t rr,d,100nf ?1.53s c d = 100 nf 2) 7.2.17 total reset reaction time t rr,total,100n f ? 10.5 18 s calculated value: t rr,d,100nf + t rr,int ; c d = 100 nf 2) 7.2.18 1) related pa rameters ( v rt,hi , v rt,hy ) are scaled linear when the reset switching threshold is modified. 2) for programming a different delay and reset reaction time, see chapter 7.1 . electrical characteristics: reset function (cont?d) v i = 13.5 v, t j = -40 c to +150 c, all voltages with respect to ground, direction of currents as shown in figure 7 (unless otherwise specified). parameter symbol limit values unit conditions number min. typ. max.
datasheet 23 rev. 1.2, 2014-10-17 tle4678 reset function 7.3 typical performance char acteristics reset function undervoltage reset switching thresholds v rt,lo , v rt,hi versus t j reset delay time t d , t d,pwr-on versus delay capacitor c d -40 t j [c] -20 20 40 80 100 v q [v], v rt [v] vrt-tj.v s d 4,9 4,8 4,7 5.0 060 140 120 v q v rt ,hi v rt ,lo output undervoltage reset headroom v rh pin radj = gnd 10 c d [nf ] 100 1000 td-cd .v s d 100 10 1 t d , t d,pwr-on [ms] t d (typ.) t d, pw r-o n (typ.)
datasheet 24 rev. 1.2, 2014-10-17 tle4678 watchdog function 8 watchdog function 8.1 description the tle4678 features a load dependen t watchdog function with a programm able activating threshold as well as programmable watchdog timing. the watchdog function monitors a micr ocontroller, including time base fa ilures. in case of a missing rising edge within a certain pulse repetition time, the watchd og output is set to ?low?. the programming of the expected watchdog pulse repetition time can be ea sily done by an external reset delay capacitor. the watchdog output ?wo? is separated from the rese t output ?ro?. hence, the watchdog output might be used as an interrupt signal for th e microcontroller indepe ndent from the reset signal. it is possible to interconnect pin ?wo? and pin ?ro? in order to esta blish a wire-or function with a dominant low signal. programmable watchdog activati on threshold and hysteresis in case a microcontroller is set to sleep mode or to low power mode, its current consumption is very low and the controller might not be able to send any watchdog pulses to the regula tors watchdog input ?wi?. in order to avoid unwanted wake-up signals due to missing edges at pin ?wi?, the tle4678 watchdog function can be activated dependent on the regulato r?s output current. th e tle4678 comprises a default watchdog activating threshold i q,wdact,th with a small hysteresis i q,wdact,hy . the thresholds can be increased by connecting an external resistor r wadj,ext to pin ?wadj?. for using the default wa tchdog activating threshold, leave pin ?wadj? open. the following equation calculates the external resistor r wadj,ext that is needed at pin ?wadj? for activating the watchdog at a desired output current i q,wdact,th : for i q,wdact,th larger than the default value given in item 8.2.1 . (8.1) at decreasing output current, the de activation threshold then would be: (8.2) the watchdog activating threshold hysteresis i q,wdact,hy calculates: (8.3) with: ? i q,wdact,th : desired ?watchdog activating threshold? ? r wadj,int : internal watchdog adjust resistor ? r wadj,ext : external watchdog adjust resistor ? f wdact,th : activating threshold factor ? f wddeact,th : deactivating threshold factor ? f wdact,hy : activating threshold factor hysteresis f wdact ,th r wadj, int ( r wadj ,int i q,wdact,th ) - f wdact , th r wadj ,ext = r wadj ,int + r wadj ,ext r wadj ,int r wadj, ext i q,wddeact,th = f wddeact,th r wadj ,int + r wadj ,ext r wadj ,int r wadj ,ext i q,wdact,hy = f wdact,hy
datasheet 25 rev. 1.2, 2014-10-17 tle4678 watchdog function figure 9 block diagram watchdog circuit figure 10 watchdog output ?wo? the watchdog output ?wo? is an open collector output with an integrated pull-up resistor. in case a lower- ohmic ?wo? signal is desired, an external pull-up resistor to the output ?q? can be connected. since the maximum ?wo? sink current is limite d, the optional external resistor r wo,ext needs to be sized to comply with the watchdog output sink current (see item 8.2.15 and item 8.2.16 ). watchdog input ?wi? the watchdog is triggered by a positive edge at the watchdog input ?wi?. th e signal is filtered by a band-pass filter and therefore its amplitude and slope have to comply with the specification item 8.2.10 to item 8.2.14 . for details on the test pulse applied, see figure 11 . figure 11 test pulses watchdog input wi gnd q i b lockdiagram _w atchdoga djust .vsd supply wo v dw int. supply i d, ch i dw ,dsch v dw , hi control d c d reset optional c q vdd micro- controller gnd & r wadj,ext (optional) edge detect wadj wi v wadj,th i/o wi r wo s r 1 r wadj ,int or i wo i wadj i q v wi t v wi,lo v wi,hi t wi,p d v wi / d t v wi v wi,lo v wi,hi 1/ f wi t
datasheet 26 rev. 1.2, 2014-10-17 tle4678 watchdog function watchdog timing positive edges at the watchdog inpu t pin ?wi? are expected within the watchdog trigger time frame t wi,tr , otherwise a low signal at pin ?wo? is generated. if a wa tchdog low signal at pin ?wo? is generated, it remains low for t wd,lo . all watchdog timings are defined by charging and discharging the capacitor c d at pin ?d?. thus, the watchdog timing can be programmed by selecting c d . for timing details see also figure 12 . in case a watchdog trigger time period t wi,tr different from the value for c d = 100nf is required, the delay capacitor?s value can be derived from the specified value given in item 8.2.22 : c d = 100nf t wi,tr / t wi,tr,100nf (8.4) the watchdog output low time t wd,lo and the watchdog period t wd,p then becomes: t wd,lo = t wd,lo,100nf c d / 100nf (8.5) t wd,p = t wi,tr + t wd,lo (8.6) the formula is valid for c d 10nf. for precise timing calculations consider a lso the delay capacitor?s tolerance. figure 12 timing diagram watchdog v wi t v wi,lo v wi,hi v wo timingdiagram_watchdog.vsd t v wo,low t wd,lo t w i,tr v dw,lo v dw,hi t v d t wd,lo t w i,p t wi,p 1/ f wi no positive v wi edge d v wi / d t outside spec
datasheet 27 rev. 1.2, 2014-10-17 tle4678 watchdog function 8.2 electrical characteristics watchdog function electrical characteristics watchdog function v i = 13.5 v, t j = -40 c to +150 c, all voltages with respect to ground, direction of currents as shown in figure 9 (unless otherwise specified). parameter symbol limit values unit conditions number min. typ. max. default watchdog activating th reshold (pin wadj left open) watchdog activating threshold i q,wdact,th 0.65 1.1 1.5 ma i q increasing 8.2.1 watchdog deactivating threshold i q,wddeact,t h 0.55 0.9 ? ma i q decreasing 8.2.2 watchdog activating threshold hysteresis i q,wdact,hy 50 200 ? a ? 8.2.3 adjustable watchdog activating threshold (e xternal resistor connected to pin wadj) activating threshold v wadj,th ? 693 ? mv ? 8.2.4 current ratio i q / i wadj ? 208 ? ? v wadj = 0v 8.2.5 internal watchdog adjust resistor r wadj,int 96 131 175 k ? ? 8.2.6 activating th reshold factor f wdact,th 127 144 162 ma k ? calculated value 1) 8.2.7 deactivating threshold factor f wddeact,t h 104 118 ? ma k ? calculated value 1) 8.2.8 activating threshold switching hysteresis factor f wdact,hy 726?ma k ? calculated value 1) 8.2.9 watchdog input wi watchdog input low signal valid v wi,lo ?? 0.8v? 2) 8.2.10 watchdog input high signal valid v wi,hi 2.6 ? ? v ? 2) 8.2.11 watchdog input high signal pulse length t wi,p 0.5 ? ? s v wi v wi,high 2) 8.2.12 watchdog input signal slew rate d v wi /d t 1??v/s v wi,low v wi v wi,high 2) 8.2.13 watchdog input signal frequency capture range f wi ??1mhzsquare wave, 50% duty cycle 2) 8.2.14
datasheet 28 rev. 1.2, 2014-10-17 tle4678 watchdog function watchdog output wo watchdog output low voltage v wo,low ?0.20.4v i wo = 1 ma; watchdog active; v wi = 0 v 8.2.15 watchdog output maximum sink current i wo,max 1.5 13 30 ma v wo = 0.8 v; watchdog active; v wi = 0 v 8.2.16 watchdog output internal pull-up resistor r wo 20 30 40 k ? ? 8.2.17 watchdog timing delay capacitor charge current i d ?2.78?a v d = 1 v 8.2.18 delay capacitor watchdog discharge current i dw,disch ?1.39?a v d = 1 v 8.2.19 upper watchdog timing threshold v dw,hi ?1.2?v? 8.2.20 lower watchdog timing threshold v dw,lo ?0.7?v? 8.2.21 watchdog trigger time t wi,tr,100nf 25 36 47 ms calculated value; c d = 100 nf 3) 8.2.22 watchdog output low time t wd,lo,100nf 13 18 23 ms calculated value; c d = 100 nf 3) v q > v rt,lo 8.2.23 watchdog period t wd,p,100nf 38 54 70 ms calculated value; t wi,tr,100nf + t wd,lo,100nf c d = 100 nf 3) 8.2.24 1) see chapter 8.1 for calculation hint 2) for details on the test pulse applied, see figure 11 . 3) for programming a different watchdog timing, see chapter 8.1 . electrical characteristics watchdog function v i = 13.5 v, t j = -40 c to +150 c, all voltages with respect to ground, direction of currents as shown in figure 9 (unless otherwise specified). parameter symbol limit values unit conditions number min. typ. max.
datasheet 29 rev. 1.2, 2014-10-17 tle4678 watchdog function 8.3 typical performance characteri stics standard watchdog function watchdog activating threshold v wadjact,th vs. external resistor r wadj,ext watchdog trigger time t wi,tr vs. delay capacitor c d watchdog deactivating threshold v wadjdeact,th vs. external resistor r wadj,ext 4 r wadj ,ext [k ] 10 100 vwadjact-rwadjext.vsd 2 1000 i q,wdact,th [ma] 4000 4 6 8 10 12 14 16 24 typ. max. 10 c d [nf] 100 1000 twitr-cd . vsd 100 10 1 t wi,tr [m s ] min. typ. max. 4 r wadj ,ext [k ] 10 100 vwadjdeact-rwadjext.vsd 2 1000 i q,wdact,th [ma] 4000 4 6 8 10 12 14 16 24 min. typ.
datasheet 30 rev. 1.2, 2014-10-17 tle4678 application information 9 application information note: the following information is given as a hint for th e implementation of the devi ce only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. 9.1 application diagram figure 13 application diagram with selecting defa ult reset and watchdog activation thresholds figure 14 application diagram with reset and watchdog activation threshold adjustment reset and watchdog generator bandgap reference protection circuits gnd d wadj radj wi q wo ro c q c d load e. g. micro controller xc22xx gnd i regulated output voltage tle 4678 supply 100nf 10f c i1 c i2 <45v d i 100nf 10f esr < 3ohm reset and watchdog generator bandgap reference protection circuits gnd d wadj radj wi q wo ro c q c d load e. g. micro controller xc22xx gnd i regulated output voltage tle 4678 supply 100nf 10f c i1 c i2 <45v d i 100nf 10f esr < 3ohm 33k 22k 47k
datasheet 31 rev. 1.2, 2014-10-17 tle4678 application information 9.2 selection of external components 9.2.1 input pin the typical input circuitry for a linear voltage re gulator is shown in the application diagram above. a ceramic capacitor at the input, in the range of 100 nf to 470 nf, is recommende d to filter out the high frequency disturbances imposed by the line e.g. iso pulses 3a/b. this capacitor must be placed very close to the input pin of the linear vo ltage regulator on the pcb. an aluminum electrolytic capacitor in the range of 10 f to 470 f is recommended as an input buffer to smooth out high energy pulses, such as iso pulse 2a. this capacitor should be placed close to the input pin of the linear voltage regulator on the pcb. an overvoltage suppressor diode can be used to further suppress any high voltage beyond the maximum rating of the linear voltage regulator and protect the device against any damage due to over-voltage. the external components at the input are not mandator y for the operation of the voltage regulator, but they are recommended in case of po ssible external disturbances. 9.2.2 output pin an output capacitor is mandatory for the stability of linear voltage regulators. the requirement to the output capacitor is given in ?functional range? on page 9 . the graph ?output capacitor series resistor esrcq vs. output current iq? on page 14 shows the stable operation range of the device. tle4678 is designed to be stable with extremel y low esr capacitors. acco rding to the automotive environment, ceramic capacitors with x5r or x7r dielectrics are recommended. the output capacitor should be placed as close as possi ble to the regulator?s output and gnd pins and on the same side of the pcb as the regulator itself. in case of rapid transients of input voltage or lo ad current, the capacitanc e should be dimensioned in accordance and verified in the real application th at the output stability requirements are fulfilled.
datasheet 32 rev. 1.2, 2014-10-17 tle4678 application information 9.3 thermal considerations knowing the input voltage, the out put voltage and the load profile of the application, the total power dissipation can be calculated: (9.1) with ? p d : continuous power dissipation ? v i : input voltage ? v q : output voltage ? i q : output current ? i q : quiescent current the maximum acceptable thermal resistance r thja can then be calculated: (9.2) with ? t j,max : maximum allowed junction temperature ? t a : ambient temperature based on the above calculation the proper pcb type and the necessary heat sink area can be determined with reference to the specification in ?thermal resistance? on page 10 . example application conditions: v i = 13.5 v v q = 5 v i q = 150 ma t a = 75 c calculation of r thja,max : p d =( v i ? v q ) i q + v i i q = (13.5v ? 5v) 150 ma + 13.5 v 8ma = 1.275 w + 0.108 w = 1.383 w r thja,max =( t j,max ? t a ) / p d = (150 c ? 75 c) / 1.383 w = 54.2 k/w p d v i v q ? () i q v i i q + = r thja max , t jmax , t a ? p d --------------------------- - =
datasheet 33 rev. 1.2, 2014-10-17 tle4678 application information as a result, the pcb design must ensure a thermal resistance r thja lower than 54.2 k/w. by considering tle4678el (pg-ssop-14 ep pack age) and according to ?thermal resistance? on page 10 , at least 600 mm2 heatsink area is needed on the fr4 1s0p pcb, or the fr4 2s2p board can be used. 9.4 reverse polarity protection tle4678 is self protected against revers e polarity faults and al lows negative s upply voltage. external reverse polarity diode is not needed. howe ver, the absolute maxi mum ratings of the device as specified in ?absolute maximum ratings? on page 8 must be kept. the reverse voltage causes several small currents to flow into the ic henc e increasing its junction temperature. as the thermal shut down circuitry does not work in th e reverse polarity condition, designers have to consider this in their thermal design.
datasheet 34 rev. 1.2, 2014-10-17 tle4678 package outlines 10 package outlines figure 15 outline pg-dso-14 green product (rohs compliant) to meet the world-wide customer requirements for en vironmentally friendly pro ducts and to be compliant with government regulations the device is available as a green product. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb -free soldering according to ipc/jedec j-std-020). 1) does not include plastic or metal protrusion of 0.15 max. per side 2) lead width can be 0.61 max. in dambar area -0.2 8.75 1) 0.64 0.19 +0.06 index marking 1.27 +0.10 0.41 0.1 1 14 2) 7 14x 8 0.175 (1.47) 0.07 ?.2 6 0.35 x 45? -0.2 1.75 max. 4 1) ?.25 8?max. -0.06 0.2 m ab m 0.2 c c b a gps01230
datasheet 35 rev. 1.2, 2014-10-17 tle4678 package outlines figure 16 outline pg-ssop-14 green product (rohs compliant) to meet the world-wide customer requirements for en vironmentally friendly pro ducts and to be compliant with government regulations the device is available as a green product. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb -free soldering according to ipc/jedec j-std-020). pg- ss op-14 1 7 14 8 14 17 8 14x 0.25 ?.05 ?.05 2) m 0.15 d c a-b 0.65 c s tand off 0.05 (1.45) 1.7 max. 0.0 8 c a b 4.9 ?.1 1) a-b h 0.1 2x 1) doe s not incl u de pl as tic or met a l protr us ion of 0.15 m a x. per s ide 2) le a d width c a n b e 0.61 m a x. in d a m ba r a re a bottom view ?.2 3 ?.2 2.65 ?.2 d h 6 14x 0.64 ?.25 3 .9 ?.1 1) 0. 3 5 x 45 0.1 hd 2x 0.2 c +0.06 0.19 8 max. index m a rking expo s ed diep a d s eating plane 6 x 0.65 = 3 .9 for further information on packages, please visit our website: http://www.infineon.com/packages . dimensions in mm
datasheet 36 rev. 1.2, 2014-10-17 tle4678 revision history 11 revision history revision date changes 1.2 2014-10-17 typical values for i q1 and i q2 updated in electrical characteristics current consumption . chapter added: application information . package outline pg-ssop-14 updated: package outlines 1.1 2009-08-27 final datasheet version fo r both package variants. modified the programmable watchdog activati on threshold and hysteresis description for better understanding. ?reset function? on page 18 : renamed v rt,new to v rt,adj for better understanding. 1.01 2008-08-19 added target definition for pg-ssop-14 pa ckage. modifications: overview page, thermal resistance table, pin definition, package outlines. 1.0 2008-07-31 final datasheet initial version.
trademarks of infineon technologies ag aurix?, c166?, canpak?, cipos?, cipurse?, coolgan?, coolmos?, co olset?, coolsic?, corecontrol?, cr ossave?, dave?, di-pol?, drbl ade?, easypim?, econobridge?, econodual? , econopack?, econopim?, eicedriver?, eupec?, fc os?, hitfet?, hybridpack?, isoface?, isopack? , i- wafer?, mipaq?, modstack?, my-d?, novali thic?, omnitune?, optiga?, optimos?, or iga?, powercode?, primarion?, primepack?, primestack?, profet?, pro-sil?, rasic?, real3?, reversave?, satric ?, sieget?, sipmos?, smartlewis ?, solid flash?, spoc?, tempfe t?, thinq!?, trenchstop?, tricore?. other trademarks advance design system? (ads) of agilent tech nologies, amba?, arm?, multi-ice?, keil?, primecell?, realview?, thumb?, vision? o f arm limited, uk. ansi? of american national standards in stitute. autosar? of autosar development partnership. bluetooth? of bluetooth sig in c. cat-iq? of dect forum. colossus?, firstgps? of trimble navigation ltd. emv? of em vco, llc (visa holdings inc.). epcos? of epcos ag. flexgo? of microsoft corporation. hyperterminal? of hilgraeve in corporated. mcs? of intel corp. iec? of commission electrotechnique internationale. irda? of infrared data association corporation. iso? of international organization for st andardization. matlab? of mathwo rks, inc. maxim? of maxim int egrated products, inc. microtec?, nucleus? of mentor graphics corporatio n. mipi? of mipi alliance, inc. mips? of mips technologies, inc ., usa. murata? of murata manufacturing co., microwave office? (mwo) of applied wave research inc., omnivision? of omnivision technologies, inc. o penwave? of openwave systems inc. red hat? of red hat, inc. rfmd? of rf mi cro devices, inc. sirius? of sirius satellite radio inc. solaris? of sun microsystems, inc. spansion? of spansion llc ltd. symbian? of symbian software limited. taiyo yuden? of taiyo yuden co. teaklite? of ceva, in c. tektronix? of tektronix inc. toko? of toko kabushiki kaisha ta. unix? of x/op en company limited. verilog?, pa lladium? of cadence design syste ms, inc. vlynq? of texas instruments incorporated. vx works?, wind river? of wind river systems, inc. zetex? of diodes zetex limited. trademarks update 2014-07-17 edition 2014-10-17 published by infineon technologies ag 81726 munich, germany ? 2014 infineon technologies ag. all rights reserved. do you have a question about any aspect of this document? email: erratum@infineon.com document reference doc_number legal disclaimer the information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infineon technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non- infringement of intellectual property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. infineon technologies components may be used in life-support devices or systems only with the express written approval of infineon technologies, if a fail ure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered. www.infineon.com

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