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  ? semiconductor components industries, llc, 2000 july, 2000 rev. 3 1 publication order number: cs5206/d cs5206-1, cs5206-3, cs5206-5 6.0 a adjustable, and fixed 3.3 v and 5.0 v linear regulators the cs5206x series of linear regulators provides 6.0 a at adjustable and fixed voltages of 3.3 v and 5.0 v with an accuracy of 1% and 2% respectively. the adjustable version uses two external resistors to set the output voltage within a 1.25 v to 13 v range. the regulators are intended for use as post regulators and microprocessor supplies. the fast loop response and low dropout voltage make these regulators ideal for applications where low voltage operation and good transient response are important. the circuit is designed to operate with dropout voltages as low as 1.0 v depending on the output current level. the maximum quiescent current is only 10 ma at full load. the regulators are fully protected against overload conditions with protection circuitry for safe operating area (soa), overcurrent and thermal shutdown. the regulators are available in to220 and surface mount d 2 pak packages. features ? output current to 6.0 a ? output trimmed to 1% ? dropout voltage 1.3 v @ 6.0 a ? fast transient response ? fault protection circuitry thermal shutdown overcurrent protection safe area protection block diagram cs52061 + thermal shutdown bandgap output current limit error amplifier v out adj v in http://onsemi.com device package shipping ordering information 2 cs52061gt3 to220* 50 units/rail cs52061gdp3 d 2 pak* 50 units/rail cs52061gdpr3 d 2 pak 750 tape & reel cs52063gt3 to220 50 units/rail cs52063gdp3 d 2 pak 50 units/rail cs52063gdpr3 d 2 pak 750 tape & reel cs52065gt3 to220 50 units/rail * to220 are all 3pin, straight leaded. d 2 pak are all 3pin. 2additional ordering information can be found on page 8 of this data sheet. d 2 pak 3pin d2t suffix case 418e to220 three lead t suffix case 221a tab = v out pin 1. adj 2. v out 3. v in 1 2 3 adjustable output fixed output tab = v out pin 1. gnd 2. v out 3. v in 1 2 3 marking diagrams xxxxxxxx awlyww 1 xxxxxxxx awlyww 1 d 2 pak to220 xxx... = specific device code a = assembly location wl, l = wafer lot yy, y = year ww, w = work week
cs52061, cs52063, cs52065 http://onsemi.com 2 block diagram cs52062, 3 + thermal shutdown bandgap output current limit error amplifier v out gnd v in maximum ratings* parameter value unit supply voltage, v cc 17 v operating temperature range 40 to +70 c junction temperature 150 c storage temperature range 60 to +150 c lead temperature soldering: wave solder (through hole styles only) note 1. reflow (smd styles only) note 2. 260 peak 230 peak c 1. 10 second maximum. 2. 60 second maximum above 183 c. *the maximum package power dissipation must be observed. electrical characteristics (c in = 10 m f, c out = 22 m f, tantalum, v in v out = 3.0 v, v in 15 v, 0 c t a 70 c, t j = +150 c, unless otherwise specified, i full load = 6.0 a.) characteristic test conditions min typ max unit adjustable output voltage (cs52061) reference voltage (notes 3. and 4.) v in v out = 1.5 v; v adj = 0 v, 10 ma i out 6.0 a 1.241 (1%) 1.254 1.266 (+1%) v line regulation 1.5 v v in v out 6.0 v; i out = 10 ma 0.04 0.20 % load regulation (notes 3. and 4.) v in v out = 1.5 v; 10 ma i out 6.0 a 0.1 0.4 % dropout voltage (note 5.) i out = 6.0 a 1.3 1.4 v current limit v in v out = 3.0 v; t j 25 c v in v out = 9.0 v 6.5 8.5 1.0 6.0 a a minimum load current v in v out = 7.0 v 1.2 100 ma adjust pin current 50 5.0 m a adjust pin current change 1.5 v v in v out 4.0 v; 10 ma i out 6.0 a 0.2 m a thermal regulation 30 ms pulse; t a = 25 c 0.003 %/w 3. load regulation and output voltage are measured at a constant junction temperature by low duty cycle pulse testing. changes i n output voltage due to thermal gradients or temperature changes must be taken into account separately. 4. specifictions apply for an external kelvin sense connection atr a point on the output pin 1/4o from the bottom of the package . 5. dropout voltage is a measurement of the minimum input/output differentail at full load.
cs52061, cs52063, cs52065 http://onsemi.com 3 electrical characteristics continued (c in = 10 m f, c out = 22 m f, tantalum, v in v out = 3.0 v, v in 15 v, 0 c t a 70 c, t j = +150 c, unless otherwise specified, i full load = 6.0 a.) characteristic test conditions min typ max unit adjustable output voltage (cs52061) continued ripple rejection f = 120 hz; c adj = 25 m f; i out = 6.0 a 82 db temperature stability 0.5 % rms output noise 10 hz f 10 khz; t a = 25 c 0.003 %v out thermal shutdown 150 180 c thermal shutdown hysteresis 25 c electrical characteristics (c in = 10 m f, c out = 22 m f, tantalum, v in v out = 3.0 v, v in 10 v, 0 c t a 70 c, t j = +150 c, unless otherwise specified, i full load = 6.0 a.) characteristic test conditions min typ max unit fixed output voltage (cs52063, cs52065) reference voltage (notes 6. and 7.) cs52065 cs52063 v in v out = 1.5 v; v adj = 0 v, 10 ma i out 6.0 a 4.9 (2%) 3.234 (2%) 5.0 3.3 5.1 (+2%) 3.366 (+2%) v line regulation 1.5 v v in v out 6.0 v; i out = 10 ma 0.04 0.20 % load regulation (notes 6. and 7.) v in v out = 1.5 v; 10 ma i out 6.0 a 0.1 0.4 % dropout voltage (note 8.) i out = 6.0 a 1.3 1.4 v current limit v in v out = 3.0 v; t j 25 c v in v out = 9.0 v 6.5 8.5 1.0 6.0 a a quiescent current v in 9.0 v; i out = 10 ma 5.0 10 ma thermal regulation 30 ms pulse; t a = 25 c 0.003 %/w ripple rejection f = 120 hz; c adj = 25 m f; i out = 6.0 a 75 db temperature stability 0.5 % rms output noise (%v out ) 10 hz f 10 khz 0.003 %v out thermal shutdown 150 180 c thermal shutdown hysteresis 25 c 6. load regulation and output voltage are measured at a constant junction temperature by low duty cycle pulse testing. changes i n output voltage due to thermal gradients or temperature changes must be taken into account separately. 7. specifictions apply for an external kelvin sense connection atr a point on the output pin 1/4o from the bottom of the package . 8. dropout voltage is a measurement of the minimum input/output differentail at full load. package pin description package pin number cs52061 cs52063, cs52065 d 2 pak to220 d 2 pak to220 pin symbol function 1 1 n/a n/a adj adjust pin (low side of the internal reference) 2 2 2 2 v out regulated output voltage (case) 3 3 3 3 v in input voltage n/a n/a 1 1 gnd ground connection
cs52061, cs52063, cs52065 http://onsemi.com 4 typical performance characteristics 012345 6 output current (a) figure 1. dropout voltage vs. output current dropout voltage (v) 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 t case = 125 c t case = 25 c t case = 0 c 0 t j ( c) figure 2. reference voltage vs. temperature output voltage deviation (%) 0.10 0.08 0.04 0.00 0.04 0.08 0.12 10 20 30 40 50 60 70 80 90 100 110 120 130 012345 6 output current (a) figure 3. load regulation vs. output current output voltage deviation, (%) 0.200 0.175 0.150 0.125 0.100 0.075 0.050 0.025 0.000 t case = 125 c t case = 25 c t case = 0 c 1 v in v out (v) figure 4. minimum load current minimum load current (ma) 0.550 t case = 125 c t case = 25 c t case = 0 c 0.875 1.200 1.525 1.850 2.175 2.500 23456789 0 temperature ( c) figure 5. adjust pin current vs. temperature adjust pin current ( m a) 40 45 50 55 60 65 70 20 40 60 80 100 120 i o = 10 ma 10 1 frequency (hz) figure 6. ripple rejection vs. frequency (fixed versions) ripple rejection (db) 0 20 40 60 80 100 10 2 10 3 10 4 10 5 t case = 25 c i out = 6.0 a (v in v out = 3.0 v) v ripple = 1.6 v pp
cs52061, cs52063, cs52065 http://onsemi.com 5 10 1 frequency (hz) figure 7. ripple rejection vs. frequency (adjustable version) ripple rejection (db) 0 20 40 60 80 100 10 2 10 3 10 4 10 5 t case = 25 c i out = 6.0 a (v in v out = 3.0 v) v ripple = 1.6 v pp c adj = 25 m f applications information the cs5206x family of linear regulators provide fixed or adjustable voltages at currents up to 6.0 a. the regulators are protected against short circuit, and include thermal shutdown and safe area protection (soa) circuitry. the soa protection circuitry decreases the maximum available output current as the inputoutput differential voltage increases. the cs5206x has a composite pnpnpn output transistor and requires an output capacitor for stability. a detailed procedure for selecting this capacitor is included in the stability considerations section. adjustable operation the adjustable regulator (cs52061) has an output voltage range of 1.25 v to 13 v. an external resistor divider sets the output voltage as shown in figure 8. the regulator maintains a fixed 1.25 v (typical) reference between the output pin and the adjust pin. a resistor divider network r1 and r2 causes a fixed current to flow to ground. this current creates a voltage across r2 that adds to the 1.25 v across r1 and sets the overall output voltage. the adjust pin current (typically 50 m a) also flows through r2 and adds a small error that should be taken into account if precise adjustment of v out is necessary. the output voltage is set according to the formula: v out  v ref   r1  r2 r1   i adj  r2 the term i adj r2 represents the error added by the adjust pin current. r1 is chosen so that the minimum load current is at least 10 ma. r1 and r2 should be the same type, e.g. metal film for best tracking over temperature. the adjust pin is bypassed to improve the transient response and ripple rejection of the regulator. c adj i adj figure 8. resistor divider scheme for the adjustable version v ref r 2 r 1 c 2 v out v in c 1 v in v out adj cs52061 stability considerations the output or compensation capacitor helps determine three main characteristics of a linear regulator: startup delay, load transient response and loop stability. the capacitor value and type is based on cost, availability, size and temperature constraints. a tantalum or aluminum electrolytic capacitor is best, since a film or ceramic capacitor with almost zero esr, can cause instability. the aluminum electrolytic capacitor is the least expensive solution. however, when the circuit operates at low temperatures, both the value and esr of the capacitor will vary considerably. the capacitor manufacturers data sheet provides this information.
cs52061, cs52063, cs52065 http://onsemi.com 6 a 22 m f tantalum capacitor will work for most applications, but with high current regulators such as the cs5206x the transient response and stability improve with higher values of capacitor. the majority of applications for this regulator involve large changes in load current so the output capacitor must supply the instantaneous load current. the esr of the output capacitor causes an immediate drop in output voltage given by:  v   i  esr for microprocessor applications it is customary to use an output capacitor network consisting of several tantalum and ceramic capacitors in parallel. this reduces the overall esr and reduces the instantaneous output voltage drop under load transient conditions. the output capacitor network should be as close as possible to the load for the best results. protection diodes when large external capacitors are used with a linear regulator it is sometimes necessary to add protection diodes. if the input voltage of the regulator gets shorted, the output capacitor will discharge into the output of the regulator. the discharge current depends on the value of the capacitor, the output voltage and the rate at which v in drops. in the cs5206x family of linear regulators, the discharge path is through a large junction and protection diodes are not usually needed. if the regulator is used with large values of output capacitance and the input voltage is instantaneously shorted to ground, damage can occur. in this case, a diode connected as shown in figures 9 and 10 is recommended. figure 9. protection diode scheme for adjustable output regulator c 2 v out v in c 1 v in v out adj cs52061 in4002 (optional) c adj r 1 r 2 figure 10. protection diode scheme for fixed output regulators c 2 v out v in c 1 v in v out gnd cs52061 in4002 (optional) output voltage sensing since the cs5206x is a three terminal regulator, it is not possible to provide true remote load sensing. load regulation is limited by the resistance of the conductors connecting the regulator to the load. for best results the fixed regulators should be connected as shown in figure 11. figure 11. conductor parasitic resistance can be minimized with the above grounding scheme for fixed output regulators v in v in v out gnd cs5206x conductor parasitic resistance r c r load for the adjustable regulator, the best load regulation occurs when r1 is connected directly to the output pin of the regulator as shown in figure 12. if r1 is connected to the load, r c is multiplied by the divider ratio and the effective resistance between the regulator and the load becomes r c   r1  r2 r1  where r c = conductor parasitic resistance.
cs52061, cs52063, cs52065 http://onsemi.com 7 figure 12. grounding scheme for adjustable output regulator to minimize parasitics v in v in v out adj cs52061 conductor parasitic resistance r 1 r load r 2 r c calculating power dissipation and heat sink requirements the cs5206x series of linear regulators includes thermal shutdown and safe operating area circuitry to protect the device. high power regulators such as these usually operate at high junction temperatures so it is important to calculate the power dissipation and junction temperatures accurately to ensure that an adequate heat sink is used. the case is connected to v out on the cs5206x, electrical isolation may be required for some applications. thermal compound should always be used with high current regulators such as these. the thermal characteristics of an ic depend on the following four factors: 1. maximum ambient temperature t a ( c) 2. power dissipation p d (watts) 3. maximum junction temperature t j ( c) 4. thermal resistance junction to ambient r q ja ( c/w) these four are related by the equation t j  t a  p d  r  ja (1) the maximum ambient temperature and the power dissipation are determined by the design while the maximum junction temperature and the thermal resistance depend on the manufacturer and the package type. the maximum power dissipation for a regulator is: p d(max)  { v in(max)  v out(min) } i out(max)  v in(max) i q (2) where: v in(max) is the maximum input voltage, v out(min) is the minimum output voltage, i out(max) is the maximum output current, for the application i q is the maximum quiescent current at i out(max) . a heat sink effectively increases the surface area of the package to improve the flow of heat away from the ic and into the surrounding air. each material in the heat flow path between the ic and the outside environment has a thermal resistance. like series electrical resistances, these resistances are summed to determine r q ja , the total thermal resistance between the junction and the surrounding air. 1. thermal resistance of the junction to case, r q jc ( c/w) 2. thermal resistance of the case to heat sink, r q cs ( c/w) 3. thermal resistance of the heat sink to the ambient air, r q sa ( c/w) these are connected by the equation: r  ja  r  jc  r  cs  r  sa (3) the value for r q ja is calculated using equation (3) and the result can be substituted in equation (1). the value for r q jc is normally quoted as a single figure for a given package type based on an average die size. for a high current regulator such as the cs5206x the majority of the heat is generated in the power transistor section. the value for r q jsa depends on the heat sink type, while r q jcs depends on factors such as package type, heat sink interface (is an insulator and thermal grease used?), and the contact area between the heat sink and the package. once these calculations are complete, the maximum permissible value of r q ja can be calculated and the proper heat sink selected. for further discussion on heat sink selection, see application note athermal management for linear regulators,o document number sr006an/d, available through the literature distribution center or via our website at http://onsemi.com.
cs52061, cs52063, cs52065 http://onsemi.com 8 additional ordering information orderable part number type description cs52061gt3 6a, adj. output 3pin to220 straight cs52061gdp3 6a, adj. output 3pin d 2 pak cs52061gdpr3 6a, adj. output 3pin d 2 pak (tape & reel) cs52063gt3 6a, 3.3v output 3pin to220 straight cs52063gdp3 6a, 3.3v output 3pin d 2 pak cs52063gdpr3 6a, 3.3v output 3pin d 2 pak (tape & reel) cs52065gt3 6a, 5v output 3pin to220 straight package dimensions to220 three lead t suffix case 221a09 issue aa notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension z defines a zone where all body and lead irregularities are allowed. dim min max min max millimeters inches a 0.570 0.620 14.48 15.75 b 0.380 0.405 9.66 10.28 c 0.160 0.190 4.07 4.82 d 0.025 0.035 0.64 0.88 f 0.142 0.147 3.61 3.73 g 0.095 0.105 2.42 2.66 h 0.110 0.155 2.80 3.93 j 0.018 0.025 0.46 0.64 k 0.500 0.562 12.70 14.27 l 0.045 0.060 1.15 1.52 n 0.190 0.210 4.83 5.33 q 0.100 0.120 2.54 3.04 r 0.080 0.110 2.04 2.79 s 0.045 0.055 1.15 1.39 t 0.235 0.255 5.97 6.47 u 0.000 0.050 0.00 1.27 v 0.045 --- 1.15 --- z --- 0.080 --- 2.04 b q h z l v g n a k f 123 4 d seating plane t c s t u r j
cs52061, cs52063, cs52065 http://onsemi.com 9 package dimensions d 2 pak 3pin d2t suffix case 418e01 issue o t dim min max min max millimeters inches a 0.326 0.336 8.28 8.53 b 0.396 0.406 10.05 10.31 c 0.170 0.180 4.31 4.57 d 0.026 0.036 0.66 0.91 e 0.045 0.055 1.14 1.40 f 0.090 0.110 2.29 2.79 g 0.100 bsc 2.54 bsc h 0.098 0.108 2.49 2.74 j 0.018 0.025 0.46 0.64 k 0.204 0.214 5.18 5.44 m 0.055 0.066 1.40 1.68 n 0.000 0.004 0.00 0.10 notes: 1. dimensions and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. b n a k m e c seating plane f h j d 3 pl g t m 0.13 (0.005) m b 123 4 l l 0.045 0.055 1.14 1.40 package thermal data parameter to220 d 2 pak unit r q jc typical 1.6 1.6 c/w r q ja typical 50 1050* c/w * depending on thermal properties of substrate. r q ja = r q jc + r q ca
cs52061, cs52063, cs52065 http://onsemi.com 10 notes
cs52061, cs52063, cs52065 http://onsemi.com 11 notes
cs52061, cs52063, cs52065 http://onsemi.com 12 on semiconductor and are trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scill c data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthori zed use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. publication ordering information central/south america: spanish phone : 3033087143 (monfri 8:00am to 5:00pm mst) email : onlitspanish@hibbertco.com asia/pacific : ldc for on semiconductor asia support phone : 3036752121 (tuefri 9:00am to 1:00pm, hong kong time) toll free from hong kong & singapore: 00180044223781 email : onlitasia@hibbertco.com japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402745 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. cs5206/d north america literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com fax response line: 3036752167 or 8003443810 toll free usa/canada n. american technical support : 8002829855 toll free usa/canada europe: ldc for on semiconductor european support german phone : (+1) 3033087140 (mf 1:00pm to 5:00pm munich time) email : onlitgerman@hibbertco.com french phone : (+1) 3033087141 (mf 1:00pm to 5:00pm toulouse time) email : onlitfrench@hibbertco.com english phone : (+1) 3033087142 (mf 12:00pm to 5:00pm uk time) email : onlit@hibbertco.com european tollfree access*: 0080044223781 *available from germany, france, italy, england, ireland


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