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TCV7100AF 2013-11-01 1 toshiba cmos integrated circuit silicon monolithic TCV7100AF buck dc-dc converter ic the TCV7100AF is a single-chip buck dc-dc converter ic. the TCV7100AF contains high-speed and low-on-resistance power mosfets for the main switch and synchronous rectifier to achieve high efficiency. features ? enables up to 2.7a (@ v in = 5v) 2.5a (@ v in = 3.3v) of load current (i out ) with a minimum of external components. ? high efficiency: = 95% (typ.) (@v in = 5 v, v out = 3.3 v, i out = 1 a) ? operating voltage range: v in = 2.7 to 5.5 v ? low on-resistance: r ds (on) = 0.12 (high side) / 0.12 (low-side) typical (@v in = 5 v, t j = 25c) ? high oscillation frequency: f osc = 800 khz (typ.) ? feedback voltage: v fb = 0.8 v 1% (@t j =0 to 85c) ? uses internal phase compensation to achieve high efficiency with a minimum of external components. ? allows the use of a small surface-mount ceramic capacitor as an output filter capacitor. ? housed in a small surface-mount package (sop advance) with a low thermal resistance. ? soft-start time adjustable by an external capacitor part marking pin assignment this product has a mos structure and is sensitive to electrostatic discharge. handle with care. the product(s) in this document (?product?) contain fu nctions intended to protect the product from temporary small overloads such as minor short-term overcurrent, or overheating. the pr otective functions do not necessarily protect product under all circumstances. when incorporating product into your system, please design the system (1) to avoid such overloads upon the product, and (2) to shut down or otherwise relieve the product of such overload conditions immediately upon occurrence. for details, please refer to the notes appearing below in this document and other documents referenced in this document. hson8-p-0505-1.27 weight: 0.068 g (typ.) part number (or abbreviation code) tcv 7100af lot no. the dot ( ? ) on the top surface indicates pin 1. * : the lot number consists of three digits. the first digit represents the last di git of the year of manufacture, and the following two digits indicates the week of manufacture between 01 and either 52 or 53. manufacturing week code (the first week of the year is 01; the last week is 52 or 53.) manufacturing year code (last digit of the year of manufacture) v fb 5 en 7 ss 6 2 v in1 3 v in2 4 sgnd l x 8 1 pgnd start of commercial production 2010-08
TCV7100AF 2013-11-01 2 ordering information part number shipping TCV7100AF (te12l, q) embossed tape (3000 units per reel) block diagram pin description pin no. symbol description 1 pgnd ground pin for the output section 2 v in1 input pin for the output section this pin is placed in the standby state if v en = low. standby current is 10 a or less. 3 v in2 input pin for the control section this pin is placed in the standby state if v en = low. standby current is 10 a or less. 4 sgnd ground pin for the control section 5 v fb feedback pin this input is fed into an internal error amplifier with a reference voltage of 0.8 v (typ.). 6 ss soft-start pin when the ss input is left open, the soft-start time is 1 ms (typ.). the soft-start time can be adjusted with an external capacitor. the exte rnal capacitor is charged from a 8- a (typ.) constant-current source, and the reference voltage of the error amplifier is regulated between 0 v and 0.8 v. the external capacitor is discharged when en = low and in case of undervoltage lockout or thermal shutdown. 7 en enable pin when en 1.5 v (@ v in = 5 v), the internal circuitry is allowed to operate and thus enable the switching operation of the output section. when en 0.5 v (@ v in = 5 v), the internal circuitry is disabled, putting the TCV7100AF in standby mode. this pin has an internal pull-down resistor of approx. 500 k . 8 l x switch pin this pin is connected to high-side p-c hannel mosfet and low-side n-channel mosfet. v in2 v fb soft start ref. voltage (0.8 v) ss en under voltage lockout control logic slope compensation oscillator error amplifier driver phase compensation short-circuit protection l x pgnd v in1 current detection sgnd constant-current source (8 a)
TCV7100AF 2013-11-01 3 absolute maximum ratings (ta = 25c) characteristics symbol rating unit input pin voltage for the output section v in1 ?0.3 to 6 v input pin voltage for the control section v in2 ?0.3 to 6 v feedback pin voltage v fb ?0.3 to 6 v soft-start pin voltage v ss ?0.3 to 6 v enable pin voltage v en ?0.3 to 6 v v en ? v in2 voltage difference v en -v in2 v en ? v in2 < 0.3 v switch pin voltage (note 1) v lx ?0.3 to 6 v switch pin current i lx 3.3 a power dissipation (note 2) p d 2.2 w operating junction temperature t jopr ? 40 to125 c junction temperature (note 3) t j 150 c storage temperature t stg ? 55 to150 c note: using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this pr oduct to decrease in the reliability significantly even if the operating conditions (i.e. operat ing temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. please design the appropriate reliability upon reviewing the toshiba semiconductor reliability handbook (?handling precautions?/?derating concept and methods?) and individual reliability data (i.e. reliability test report and estimated failure rate, etc) note 1: the switch pin voltage (v lx ) doesn?t include a peak voltage generated by TCV7100AF?s switching. a negative voltage generated in dead time is allowed among the switch pin current (i lx ). thermal resistance characteristics characteristics symbol max unit thermal resistance, junction to ambient r th (j-a) 44.6 (note 2) c/w thermal resistance, junction to case r th (j-c) 4.17 c/w note 2: note 3: the TCV7100AF may into thermal shutdown at t he rated maximum junction temperature. thermal design is required to ensure that the rated maxi mum operating junction temperature, t jopr , will not be exceeded. fr-4 25.4 25.4 0.8 (unit: mm) glass epoxy board sin g le-pulse measurement: p ulse width t=10(s)
TCV7100AF 2013-11-01 4 electrical characteristics (t j = 25c, v in1 = v in2 = 2.7 to 5.5 v, unless otherwise specified) characteristics symbol test condition min typ. max unit operating input voltage v in (opr) ? 2.7 ? 5.5 v operating current i in v in1 = v in2 = v en = v fb = 5 v ? 450 600 a output voltage range v out (opr) v en = v in1 = v in2 0.8 ? ? v i in (stby) 1 v in1 = v in2 = 5 v, v en = 0 v v fb = 0.8 v ? ? 10 standby current i in (stby) 2 v in1 = v in2 = 3.3 v, v en = 0 v v fb = 0.8 v ? ? 10 a high-side switch leakage current i leak (h) v in1 = v in2 = 5 v, v en = 0 v v fb = 0.8 v, v lx = 0 v ? ? 10 a v ih (en) 1 v in1 = v in2 = 5 v 1.5 ? ? v ih (en) 2 v in1 = v in2 = 3.3 v 1.5 ? ? v il (en) 1 v in1 = v in2 = 5 v ? ? 0.5 en threshold voltage v il (en) 2 v in1 = v in2 = 3.3 v ? ? 0.5 v i ih (en) 1 v in1 = v in2 = 5 v, v en = 5 v 6 ? 13 en input current i ih (en) 2 v in1 = v in2 = 3.3 v, v en = 3.3 v 4 ? 9 a v fb1 v in = 5 v, v en = 5 v tj = 0 to 85 0.792 0.8 0.808 v fb input voltage v fb2 v in = 3.3 v, v en = 3.3 v tj = 0 to 85 0.792 0.8 0.808 v v fb input current i fb v in1 = v in2 = 2.7 to 5.5 v v fb = v in2 ?1 ? 1 a r ds (on) (h) 1 v in1 = v in2 = 5 v, v en = 5 v i lx = ?1 a ? 0.12 ? high-side switch on-state resistance r ds (on) (h) 2 v in1 = v in2 = 3.3 v, v en = 3.3 v i lx = ?1 a ? 0.13 ? r ds (on) (l) 1 v in1 = v in2 = 5 v, v en = 5 v i lx = 1 a ? 0.12 ? low-side switch on-state resistance r ds (on) (l) 2 v in1 = v in2 = 3.3 v, v en = 3.3 v i lx = 1 a ? 0.13 ? oscillation frequency f osc v in1 = v in2 = v en = 5 v 640 800 960 khz internal soft-start time t ss v in1 = v in2 = 5 v, i out = 0 a, measured between 0% and 90% points at v out . 0.5 1 1.5 ms external soft-start charge current i ss v in1 = v in2 = 5 v, v en = 5 v ?5 ?8 ?11 a high-side switch duty cycle dmax v in1 = v in2 = 2.7 to 5.5 v ? ? 100 % detection temperature t sd v in1 = v in2 = 5 v ? 150 ? thermal shutdown (tsd) hysteresis t sd v in1 = v in2 = 5 v ? 15 ? c detection voltage v uv v en = v in1 = v in2 2.35 2.45 2.6 recovery voltage v uvr v en = v in1 = v in2 2.45 2.55 2.7 undervoltage lockout (uvlo) hysteresis v uv v en = v in1 = v in2 ? 0.1 ? v i lim1 v in1 = v in2 = 5 v, v out = 2 v 3.2 4.2 ? a l x current limit i lim2 v in1 = v in2 = 3.3 v, v out = 2 v 2.9 3.8 ? a note on electrical characteristics the test condition t j = 25c means a state where any drifts in electrical characteristics incurred by an increase in the chip?s junction temperature can be ignored during pulse testing.
TCV7100AF 2013-11-01 5 application circuit example figure 1 shows a typical application circuit using a low-esr electrolytic or ceramic capacitor for c out . figure 1 TCV7100AF app lication circuit example component values (reference value@ v in = 5 v, v out = 3.3 v, ta = 25c) c in : input filter capacitor = 10 f (ceramic capacitor: grm21bb30j106k manufactured by murata manufacturing co., ltd.) c out : output filter capacitor = 47 f (ceramic capacitor: grm31cb30j476m manufactured by murata manufacturing co., ltd.) r fb1 : output voltage setting resistor = 7.5 k r fb2 : output voltage setting resistor = 2.4 k l: inductor = 2.2 h (rlf7030t-2r2m5r4 manufactured by tdk-epc corporation) c ss is a capacitor for adjusting the soft-start time. c c is a decoupling capacitor of input pin for the control section. (connect it when the circuit op eration is unstable due to the board layout and the feature of c in .) examples of component values (for reference only) output voltage setting v out inductance l input capacitance c in output capacitance c out feedback resistor r fb1 feedback resistor r fb2 1.2 v 2.2 h 10 f 68 f 7.5 k 15 k 1.51 v 2.2 h 10 f 68 f 16 k 18 k 1.8 v 2.2 h 10 f 68 f 15 k 12 k 2.5 v 2.2 h 10 f 47 f 5.1 k 2.4 k 3.3 v 2.2 h 10 f 47 f 7.5 k 2.4 k component values need to be adjusted, depending on the TCV7100AF?s i/o conditions and the board layout. v in1 v in2 en ss TCV7100AF sgnd pgnd c ss c c v in en gnd c in l x v fb l r fb1 r fb2 c out v out gnd
TCV7100AF 2013-11-01 6 application notes inductor selection the inductance required for inductor l can be calculated as follows: in out losc out in v v if vv l ? ? ? = (1) v in : input voltage (v) v out : output voltage (v) f osc : oscillation frequency = 800 khz (typ.) i l : inductor ripple current (a) * : generally, i l should be set to approximately 25% of th e maximum output current. since the maximum output current of the TCV7100AF is 2.7a, i l should be 0.68 a or so. the in ductor should have a current rating greater than the peak output cu rrent of 3.1 a. if the inductor current rating is exceeded, the inductor becomes saturated, leading to an unstable dc-dc converter operation. when v in = 5 v and v out = 3.3 v, the required inductance can be calculated as follows. be sure to select an appropriate inductor, taking the in put voltage range into account. in out losc out in v v if vv l ? ? ? = v5 v3.3 0.68a 800khz v3.3v5 ? ? ? = = 2.1 h figure 2 inductor current waveform setting the output voltage a resistive voltage divider is connected as shown in figure 3 to set the output voltage; it is given by equation 2 based on the reference voltage of the error amplifier (0.8 v typ.), which is connected to the feedback pin, v fb . r fb1 should be up to 30 k or so, because an extremely large-value r fb1 incurs a delay due to parasitic capacitance at the v fb pin. it is recommended that resistors with a precision of 1% or higher be used for r fb1 and r fb2 . ? ? ? ? ? ? ? ? +?= fb2 fb1 fb out r r 1v v ? ? ? ? ? ? ? ? +.= fb2 fb1 r r 1v 80 (2) figure 3 output voltage setting resistors l x v fb r fb1 r fb2 v out i l i l osc f 1 t = in out on v v t ?= 0
TCV7100AF 2013-11-01 7 output filter capacitor selection use a low-esr electrolytic or ceramic capacitor as the output filter capacitor. since a capacitor is generally sensitive to temperature, choose one with excellent temperature characteristics. as a rule of thumb, its capacitance should be 30 f or greater for applications where v out 2 v, and 60 f or greater for applications where v out < 2 v. the capacitance should be set to an opti mal value that meets the system?s ripple voltage requirement and transient load response characteristic s. the phase margin tends to decrease as the output voltage is getting low. enlarge a ca pacitance for output flatness when ph ase margin is insufficient, or the transient load response characteristics cannot be satisfied. since the ceramic capacitor has a very low esr value, it helps reduce the output ripple voltage; however, because the ceramic capacitor provides less phase margin, it should be thoroughly evaluated. output filter capacitors with a smaller value mentioned above can be used by adding a phase compensation circuit to the v fb pin. for example, suppose using two 10 f ceramic capacitors as output filter capacitors; then the phase compensation circuit sh ould be programmed as follows: c p1 ( f) = 2 / r fb1 ( ) (3) c p2 ( f) = c p1 ( f) 10 (4) r fb2 // r p = r fb1 / 2 (5) * set the upper cut-off frequency of c p1 and r fb1 to approx. 80 khz (f osc /10). (3) * choose the value of c p2 to produce zero-frequency at 1/10th the upper cut-off frequency. (4) * if r fb2 is less than half of r fb1 , r p and c p2 are not necessary. (5) (only c p1 allows programming of v out above 1.8 v.) figure 4 phase compensation circuit examples of component values in the phas e compensation circuit (for reference only) the following values need tuning, depending on th e TCV7100AF?s i/o conditions and the board layout. v out c out r fb1 r fb2 r p c p1 c p2 1.2 v 10 f 2 7.5 k 15 k 4.7 k 270 pf 2700 pf 1.51 v 10 f 2 16 k 18 k 15 k 120 pf 1200 pf 1.8 v 10 f 2 15 k 12 k ? 180 pf ? 2.5 v 10 f 2 5.1 k 2.4 k ? 390 pf ? 3.3 v 10 f 2 7.5 k 2.4 k ? 270 pf ? the phase compensation circuit show n above delivers good tr ansient load response characteristics with small-value output filter ca pacitors by programming f 0 (the frequency at which the open-loop gain is equal to 0db) to a high frequency. for output filter capacitors, use low-esr ceramic capacitors with excellent temperature characteristics (such as the jis b characteristic). alth ough the external phase comp ensation circuit improves noise immunity, they should be thorou ghly evaluated to ensure that the system?s rippl e voltage requirement and transient load response characteristics are met. soft-start feature the TCV7100AF has a soft-start feature. if the ss pin is left open, the soft-start time, t ss , for v out defaults to 1 ms (typ.) internally. the soft-start time can be extended by adding an external capacitor (c ss ) between the ss and sgnd pins. the soft-start time can be calculated as follows: ss ss2 c1.0t ?= (6) t ss2 : soft-start time (in seconds) when an external capacitor is connected between ss and sgnd. c ss : capacitor value ( f) the soft-start feature is activated when the tcv71 00af exits the undervoltage lockout (uvlo) state after power-up and when the voltage at the en pi n has changed from logic low to logic high. l x v fb r fb1 r fb2 v out c p1 c p2 r p c out 20 f
TCV7100AF 2013-11-01 8 overcurrent protection ocp the TCV7100AF has maximum current limiting. the tcv710 0af limits the on time of high side switching transistor and decreases output volt age when the peak value of the lx terminal current exceeds switching terminal peak current limitation i lim1 =4.2a(typ.)@ v in = 5v / i lim2 =3.8a(typ.)@ v in = 3.3v. when v in R 3.8v, the TCV7100AF can operate at i out = 2.7a(max). meanwhile, use it at i out = 2.5a(max) when v in 3.8v. undervoltage lockout (uvlo) the TCV7100AF has undervoltage lock out (uvlo) protection circuitry. the TCV7100AF does not provide output voltage (v out ) until the input voltage has reached v uvr (2.55 v typ.). uvlo has hysteresis of 0.1 v (typ.). after the switch turns on, if v in2 drops below v uv (2.45 v typ.), uvlo s huts off the switch at v out . figure 5 undervoltage lockout operation thermal shutdown (tsd) the TCV7100AF provides thermal shut down. when the junction temperature continues to rise and reaches t sd (150c typ.), the TCV7100AF goes into thermal shutdown and shuts off the power supply. tsd has a hysteresis of about 15c (typ.). the device is enabled again when the junction temperature has dropped by approximately 15c from the tsd trip po int. the device resumes the power su pply when the soft-start circuit is activated upon recovery from tsd state. thermal shutdown is intended to protect the device ag ainst abnormal system conditio ns. it should be ensured that the tsd circuit will not be activated during normal operation of the system. figure 6 thermal shutdown operation soft start v in2 hysteresis: ' v uv undervoltage lockout detection voltage v uv switching operation stops gnd v out gnd undervoltage lockout recovery voltage v uvr switching operation starts soft start tsd detection temperature: t sd gnd switching operation stops recovery from tsd switching operation starts v out 0 t j hysteresis: ' t sd
TCV7100AF 2013-11-01 9 usage precautions ? the input voltage, output voltage, output current and temperature condit ions should be considered when selecting capacitors, inductors and resistors. these co mponents should be evalua ted on an actual system prototype for best selection. ? external components such as capacitors, inductors and re sistors should be placed as close to the TCV7100AF as possible. ? the TCV7100AF has an esd diode between the en and v in2 pins. the voltage between these pins should satisfy v en ? v in2 < 0.3 v. ? c in should be connected as close to the pgnd and v in1 pins as possible. operation might become unstable due to board layout. in that case, add a decoupling capacitor (c c ) of 0.1 f to 1 f between the sgnd and v in2 pins. ? the minimum programmable output voltage is 0.8 v (typ .). if the difference betw een the input and output voltages is small, the output voltage might not be regulated accurately and fluctuate significantly. ? when TCV7100AF is in operation, a negative voltage ge nerates since regeneration cu rrent flows in the switch pin (l x ). even if a current flows in a low side parasitic di ode during the dead time of switching transistor, it doesn?t disturb operation so an external flywheel diode isn?t needed. if yo u have possibility of an external negative voltage generation, add a diode for protection. ? sgnd pin is connected with the back of ic chip and serves as the heat radiation pin. secure the area of a gnd pattern as large as possible fo r greater of heat radiation. ? the overcurrent protection circuits in the product are designed to temp orarily protect product from minor overcurrent of brief du ration. when the overcurrent protective func tion in the product activates, immediately cease application of overcurrent to prod uct. improper usage of product, such as application of current to product exceeding the absolute maximum ratings, could cause the overcurrent protecti on circuit not to operate properly and/or damage product permanently even before the protection circuit starts to operate. ? the thermal shutdown circuits in the product are designed to temporarily protect product from minor overheating of brief duration. when th e overheating protective function in the product activates, immediately correct the overheating situation. im proper usage of product, such as the application of heat to product exceeding the absolute maximum ratings, could cause the overheating protecti on circuit not to operate properly and/or damage product permanently even before the protection circuit starts to operate.
TCV7100AF 2013-11-01 10 typical performance characteristics 0 2 4 6 200 400 600 0 v en = v fb = v in t j = 25c v in = 5.5 v t j = 25c 0 2 4 6 5 3 1 8 20 0 16 12 4 ? 50 ? 25 0 25 50 75 125 100 v en = v in = 5 v v fb = v in ? 50 0 25 50 100 125 ? 25 75 v in = 5 v v ih(en) v il(en) ? 50 ? 25 0 25 50 75 100 125 v in = 3.3 v v ih(en) v il(en) ? 50 ? 25 0 25 50 75 125 100 i in ? v in i in ? t j input voltage v in (v) junction temperature t j (c) operating current i in ( a) operating current i in ( a) i in ? t j v ih(en) , v il(en) ? t j junction temperature t j (c) junction temperature t j (c) operating current i in ( a) en threshold voltage v ih(en) , v il(en) (v) v ih(en) , v il(en) ? t j i ih(en) ? v en junction temperature t j (c) en input voltage v en (v) en threshold voltage v ih(en) , v il(en) (v) en input current i ih(en) ( a) 200 400 600 0 200 400 600 0 1 2 0 1.5 0.5 1 2 0 1.5 0.5 v en = v in = 3.3 v v fb = v in
TCV7100AF 2013-11-01 11 undervoltage lockout voltage v uv , v uvr (v) 2 3 4 5 6 0.8 0.82 0.78 v en = v in v out = 1.2 v t j = 25c 4 8 12 20 0 16 v in = 5 v v en = 5 v ? 50 ? 25 0 50 75 100 125 25 v en = v in t j = 25c 2.7 2.2 2.4 2.3 2.5 2.6 0 2 1.5 0.5 1 recovery voltage (v uvr ) detection voltage (v uv ) ? 50 ? 25 0 25 50 75 100 125 2.6 2.3 2.5 2.4 v en = v in v in = 5 v v out = 1.2 v v en = v in ? 50 0 25 50 75 100 125 ? 25 0.8 0.82 0.78 0.79 0.81 v in = 3.3 v v out = 1.2 v v en = v in ? 50 ? 25 0 25 50 75 125 100 0.8 0.82 0.78 0.79 0.81 i ih(en) ? t j v uv , v uvr ? t j junction temperature t j (c) junction temperature t j (c) en input current i ih(en) ( a) v out ? v in v fb ? v in input voltage v in (v) input voltage v in (v) output voltage v out (v) v fb input voltage v fb (v) v fb ? t j v fb ? t j junction temperature t j (c) junction temperature t j (c) v fb input voltage v fb (v) v fb input voltage v fb (v) 0.79 0.81
TCV7100AF 2013-11-01 12 2 3 4 5 6 t j = 25c 900 1000 600 700 800 v in = 5 v t j = 25c 2 3 4 5 6 v in = 3.3 v v in = 5 v ? 50 ? 25 0 25 50 75 100 125 f osc ? v in f osc ? t j input voltage v in (v) junction temperature t j (c) oscillation frequency f osc (khz) oscillation frequency f osc (khz) i ss ? v in i ss ? t j input voltage v in (v) junction temperature t j (c) external soft-start charge current i ss ( a) external soft-start charge current i ss ( a) i ss ? t j junction temperature t j (c) external soft-start charge current i ss ( a) 900 1000 600 700 800 ? 12 ? 10 ? 8 ? 6 ? 4 ? 2 0 ? 12 ? 10 ? 8 ? 6 ? 4 ? 2 0 ? 50 ? 25 0 25 50 75 100 125 ? 50 ? 25 0 25 50 75 100 125 ? 12 ? 10 ? 8 ? 6 ? 4 ? 2 0
TCV7100AF 2013-11-01 13 v in = 3.3 v, v out = 1.2 v l = 2.2 h, c out = 68 f ta = 25c v in = 5 v, v out = 3.3 v l = 2.2 h, c out = 47 f ta = 25c 0 30 ? 30 20 10 ? 10 ? 20 0 1 3 2 v out ? i out v out ? i out output current i out (a) output current i out (a) output voltage v out (mv) output voltage v out (mv) v out ? i out v out ? v in output current i out (a) input voltage v in (v) output voltage v out (mv) output voltage v out (mv) v out ? v in ? i out input voltage v in (v) output current i out (a) output voltage v out (mv) efficiency (%) 0 1 3 2 0 20 10 ? 10 ? 20 0 1 3 2 0 20 10 ? 10 ? 20 v in = 5 v, v out = 1.2 v l = 2.2 h, c out = 68 f ta = 25c 0 40 20 ? 20 ? 40 2 3 4 5 6 v out = 3.3 v, i out = 10 ma l = 2.2 h, c out = 47 f ta = 25c ? 10 10 30 ? 30 0 20 10 ? 10 ? 20 2 3 4 5 6 v out = 1.2 v, i out = 10 ma l = 2.2 h, c out = 68 f ta = 25c 0 1 3 2 0 80 20 100 60 40 v in = 5 v, v out = 3.3 v l = 2.2 h, c out = 47 f ta = 25c
TCV7100AF 2013-11-01 14 0 1 3 2 output voltage: v out : (1 v/div) en voltage: v en = l h ? i out output current i out (a) output current i out (a) efficiency (%) efficiency (%) overcurrent protection overcurrent protection output current i out (a) output current i out (a) output voltage v out (v) output voltage v out (v) startup characteristics (internal soft-start time) startup characteristics (c ss = 0.1 f) 200 s/div 2 ms/div 0 1 3 2 0 80 20 100 60 40 0 80 20 100 60 40 ? i out v in = 3.3 v, v out = 1.2 v l = 2.2 h, c out = 68 f ta = 25c v in = 5 v, v out = 1.2 v l = 2.2 h, c out = 68 f ta = 25c output voltage: v out : (1 v/div) en voltage: v en = l h v in = 5 v v out = 3.3 v ta = 25c c ss = 0.1 f v in = 5 v v out = 3.3 v ta = 25c 2 3 5 4 0 3 2 4 v out = 3.3 v, ta = 25c l = 2.2 h, c out = 47 f 1 input voltage: v in = 5.5 v 2 3 5 4 0 1.5 1 2 v out = 1.2 v, ta = 25c l = 2.2 h, c out = 68 f 0.5 input voltage: v in = 5.5 v input voltage: v in = 2.7 v
TCV7100AF 2013-11-01 15 load response characteristics load response characteristics 200 s/div 200 s/div load response characteristics load response characteristics 200 s/div 200 s/div load response characteristics (with an external phase compensation circuit) 200 s/div v in = 3.3 v, v out = 1.2 v, ta = 25c l = 2.2 h, c out = 68 f output voltage: v out (100 mv/div) output current: i out (10 ma 2 a 10 ma) output current: i out (1.25 a 2.5 a 1.25 a) output voltage: v out (50 mv/div) v in = 5 v, v out = 1.2 v, ta = 25c l = 2.2 h, c out = 68 f output current: i out (1.25 a 2.5 a 1.25 a) output voltage: v out (50 mv/div) v in = 5 v, v out = 1.2 v, ta = 25c l = 2.2 h, c out = 10 f 2 r p = 4.7 k , c p1 = 270 pf, c p2 = 2700 pf output current: i out (10 ma 2 a 10 ma) v in = 5 v, v out = 3.3 v, ta = 25c l = 2.2 h, c out = 47 f output voltage: v out (100 mv/div) output voltage: v out (100 mv/div) output current: i out (10 ma 2 a 10 ma) v in = 5 v, v out = 1.2 v, ta = 25c l = 2.2 h, c out = 68 f
TCV7100AF 2013-11-01 16 package dimensions hson8-p-0505-1.27 unit: mm weight: 0.068 g (typ.)
TCV7100AF 2013-11-01 17 restrictions on product use ? toshiba corporation, and its subsidiaries and affiliates (collect ively "toshiba"), reserve the right to make changes to the in formation in this document, and related hardware, software and systems (collectively "product") without notice. ? this document and any information herein may not be reproduc ed without prior written permission from toshiba. even with toshiba's written permission, reproduction is permissible only if reproducti on is without alteration/omission. ? though toshiba works continually to impr ove product's quality and reliability, produc t can malfunction or fail. customers are responsible for complying with safety standards and for providi ng adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situat ions in which a malfunction or failure of product could cause loss of human life, b odily injury or damage to property, including data loss or corruption. before customers use the produc t, create designs including the product, or incorporate the product into their own applications, customers must also refer to and comply with (a) the latest versions of all relevant toshiba information, including wi thout limitation, this document, the specif ications, the data sheets and application notes for product and the precautions and conditions set forth in the "toshiba semiconductor reliability handbook" and (b) the instructio ns for the application with which the product will be used with or for. customers are solely responsible for all aspects of their own product design or applications, including but not limited to (a) determin ing the appropriateness of the use of this product in such des ign or applications; (b) evaluating and determining the applicability of an y information contained in this document, or in charts, dia grams, programs, algorithms, sample application ci rcuits, or any other referenced documents; and (c) validating all operating paramete rs for such designs and applications. toshiba assumes no liability for customers' product design or applications. ? product is neither intended nor warranted for use in equipments or systems that require extraordinarily high levels of quality and/or reliability, and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage and/or serious public impact ( " unintended use " ). except for specific applications as expressly stated in this document, unintended use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used f or automobiles, trains, ships and other transp ortation, traffic signaling equipment, equipment used to control combustions or expl osions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. if you use product for unintended use, toshiba assumes no liability for product. for details, please contact your toshiba sales representative. ? do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy product, whether in whole or in part. ? product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable laws or regulations. ? the information contained herein is presented only as guidance for product use. no responsibility is assumed by toshiba for an y infringement of patents or any other intellectual property rights of third parties that may result from the use of product. no license to any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise. ? absent a written signed agreement, except as provid ed in the relevant terms and conditions of sale for product, and to the maximum extent allowable by law, toshiba (1) assumes no liability whatsoever, including without limitation, indirect, co nsequential, special, or incidental damages or loss, including without limitation, loss of profit s, loss of opportunities, business interruption and loss of data, and (2) disclaims any and all express or implied warranties and conditions related to sale, use of product, or information, including warranties or conditions of merchantability, fitness for a particular purpose, accuracy of information, or noninfringement. ? do not use or otherwise make available product or related so ftware or technology for any milit ary purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technolog y products (mass destruction weapons). product and related software and technology may be controlled under the applicable export laws and regulations including, without limitation, the japanese foreign exchange and foreign trade law and the u.s. export administration regulations. export and re-export of product or related software or tech nology are strictly prohibited except in compliance with all applicable export laws and regulations. ? please contact your toshiba sales representative for details as to environmental matters such as the rohs compatibility of pro duct. please use product in compliance with all app licable laws and regulations that regulate the inclusion or use of controlled subs tances, including without limitation, the eu rohs directive. toshiba assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations.

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