1 rev. 10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation 1.5a low dropout voltage regulator adjustable & fixed output, fast response time spx29150/51/52/53 description features adjustable output down to 1.25v 1% output accuracy output current of 1.5a low dropout voltage of 390mv @ 1.5a extremely tight load and line regulation extremely fast transient response reverse-battery protection zero current shutdown (5 pin version) error flag signal output for out of regulation state (5 pin version) standard to-220 and to-263 packages the spx29150/51/52/53 are 1.5a, highly accuracy voltage regulators with a low drop out voltage of 390mv dropout (typical) @ 1.5a. these regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. they are fully fault protected against over-current, reverse battery, and positive and negative voltage transients. on-chip trimming adjusts the reference voltage to 1% initial accuracy. other features in the 5 pin versions include enable, and error flag. the spx29150/51/52/53 is offered in 3 & 5-pin to-220 & to-263 packages. for a 3a version, refer to the spx29300 data sheet. applications powering vga & sound card lcd monitors usb power supply power pc supplies smps post regulator high efficiency ?reen?computer systems high efficiency linear power supplies portable instrumentation constant current regulators adjustable power supplies battery charger spx29150 v out v in 6.8 f + + 10 f 1 2 3 spx29152 v out v in gnd adj 1 2 3 4 5 r1 r2 6.8 f ++ 10 f figure 1. fixed output linear regulator figure 2. adjustable output linear regulator
rev.10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation 2 absolute maximum ratings lead temperature (soldering, 5 seconds) ................260 c storage temperature range........................-65 c to +150 c operating junction temperature range......-40 c to +125 c input voltage (note 7) .................................................... 16v electrical characteristics at v in =v out + 1v and i out = 10ma, c in = 6.8 f, c out = 10 f, t a = 25 c, unless otherwise specified. the boldface applies over the junction temperature range. adjustable versions are set to 5.0v. spx29150/51 parameter conditions typ min max units fixed voltage options 1.8v version output voltage i out = 10ma 1.8 1.782 1.818 v 10ma i out 1.5a, 2.5v v in 16v 1.8 1.764 1.836 2.5v version output voltage i out = 10ma 2.5 2.475 2.525 v 10ma i out 1.5a, 3.5v v in 16v 2.5 2.450 2.550 3.3v version output voltage i out = 10ma 3.3 3.267 3.333 v 10ma i out 1.5a, 4.3v v in 16v 3.3 3.234 3.366 5.0v version output voltage i out = 10ma 5.0 4.950 5.050 v 10ma i out 1.5a, 6.0v v in 16v 5.0 4.900 5.100 all voltage options spx29150/51/52/53 line regulation i out =10ma,(v out +1v) v in 16v 0.1 0.5 % load regulation v in =v out +1v, 10ma i out i fullload 0.2 1 % ? v/ ? tv out temp coefficient 13 100 ppm/ c dropout voltage i out =100ma 70 200 mv (note 1, except 1.8v) i out =750ma 230 i out =1.5a 390 600 ground current i out =750ma, v in =v out +1v 12 25 ma (note 3) i out =1.5a 45 ground pin current v in =0.1v less than specified v out, 0.9 ma at dropout i out =10ma current limit v out =0v (note 2) 2.2 1.7 a output noise voltage c l =10 f 400 v rms (10hz to 100khz) i l =100ma c l =33 f 260 reference voltage adjustable version only 1.240 1.228 1.252 v 1.215 1.265 reference voltage adjustable version only (note 8) 1.203 1.277 adjust pin bias current 40 80 na 120 reference voltage (note 4) 13 ppm/ c temp. coeff. adjust pin bias 0.1 na/ c current temp. coeff.
3 rev. 10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation electrical characteristics at v in =v out + 1v and i out = 10ma, c in = 6.8 f, c out = 10 f, t a = 25 c, unless otherwise specified. the boldface applies over the junction temperature range. adjustable versions are set to 5.0v. parameter conditions typ min max units flag output (error comparator) spx29150/29151/29153 output leakage v oh =16v 0.1 1 a current 2 output low voltage device set for 5v,v in =4.5v, i ol =250 a 200 300 mv 400 upper threshold device set for 5v, (note 5) 60 40 mv voltage 25 lower threshold device set for 5v, (note 5) 75 95 mv voltage 140 hysteresis device set for 5v, (note 5) 15 mv enable input spx29151/29152 input logic voltage low (off) v in <10v 0.8 v high (on) 2.4 enable input pin v en =16v 100 600 a 750 v en =0.8v 1 a 2 regulator output (note 6) 10 500 a current in shutdown thermal resistance to-200 junction to case, at tab 3 c/w to-220 junction to ambient 60 to-263junction to case, at tab 3 to-263 junction to ambient 60 notes: note 1: dropout voltage is defined as the input to output differential when the output voltage drops to 99% of its nominal valu e. note 2: v in = v out (nominal) +1v. for example, use v in = 4.3v for a 3.3v regulator. employ pulse-testing procedures to minimize temperature rise. note 3: ground pin current is the regulator quiescent current. the total current drawn from the source is the sum of the load current to the ground current. note 4: thermal regulation is defined as the change in the output voltage at a time t after a change in power dissipation is ap plied, excluding load or line regulation effects. note 5: comparator threshold is expressed in terms of a voltage differential at the adjust terminal below the nominal reference voltage measured 6v input. to express these thresholds in terms of output voltage change, multiply the error amplifier gain = v out /v ref = (r1 + r2)/r2. for example, at a programmable output voltage of 5v, the error output is guaranteed to go low when the output drops by 95mvx 5v/ 1.240v = 38mv. threshold rem ain constant as a percent of v out as v out is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed. note 6: v en 0.8v and v in 16v, v out = 0. note 7: maximum positive supply voltage of 20v must be of limited duration (<100m_) < 1%. the maximum continuous supply voltag e is 16v. note 8: v ref v out (v in -1), 2.5v v in 16v, 10ma i l i fl , t j < t jmax . reference thermal shutdown en in out adj gnd o.v i limit 28v r1* r2* 1.180v 1.240v + + -- flag block diagram
rev.10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation 4 typical performance characteristics figure 3. line regulation figure 4. load regulation figure 5. ground current vs load current figure 6. ground current vs input voltage figure 7. ground current vs load current in dropout figure 8. dropout voltage vs load current 3.280 3.285 3.290 3.295 3.300 3.305 3.310 3.315 3.320 46810 12 14 16 vin (v) 3.3v device il = 10ma cl = 10 f vout (v) 3.280 3.285 3.290 3.295 3.300 3.305 3.310 0 0.25 0.5 0.75 1 1.25 1.5 il (a) vin = 4.3v cl = 10 f 3.3v device vout (v ) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 0 0.25 0.5 0.75 1 1.25 1.5 il (a) 3.3v device vin = 4.3v cl = 10 f ignd (ma) 180 200 220 240 260 280 300 468101 214 16 vin (v) 3.3v device il = 10ma cl = 10 f ignd (ua) 0 10 20 30 40 50 60 70 80 90 100 00.250 .5 0.75 1 1.25 1.5 il (a) 3.3v device vin = 3.2v cl = 10 f ignd (ma) 0 100 200 300 400 500 600 00.250 .5 0.75 1 1.25 1.5 il (a) 3.3v device cl = 10 f vdropout (mv)
5 rev. 10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation figure 9. ground current vs temperature figure 10. output voltage vs temperature at at i load =10ma i load =10ma figure 11. ground current vs temperature at figure 12. output voltage vs temperature in dropout i load =500 at i load =750ma figure 13. ground current vs temperature at figure 14. output current vs temperature in dropout i load =1.5a at i load =1.5a typical performance characteristics (cont.) 180 190 200 210 220 230 240 250 260 270 280 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device vin = 4.3v il = 10ma cl = 10 f ignd (ua) 5.00 5.20 5.40 5.60 5.80 6.00 6.20 6.40 6.60 6.80 7.00 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device vin = 4.3v il = 500ma cl = 10 f ignd (ma) 20 21 22 23 24 25 26 27 28 29 30 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device vin = 3.2v il = 750ma cl = 10 f ignd (ma) 36.0 38.0 40.0 42.0 44.0 46.0 48.0 50.0 52.0 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device vin = 4.3v il = 1.5a cl = 10 uf ignd (ma) 70 75 80 85 90 95 100 -40 -20 02040608 0100 120 temperature ( o c) 3.3v device vin = 3.2v il = 1.5a cl = 10 f ignd (ma) 3.220 3.230 3.240 3.250 3.260 3.270 3.280 3.290 3.300 3.310 3.320 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device vin = 4.3v il = 10ma cl = 10 f vout
rev.10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation 6 figure 15. dropout voltage vs temperature at i load =750ma figure 17. enable current vs temperature at v en =16v figure 18. enable threshold vs temperature typical performance characteristics (cont.) 150 170 190 210 230 250 270 290 310 330 350 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device il = 750ma cl = 10 f vdropout (mv) 320 340 360 380 400 420 440 460 480 500 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device il = 750ma cl = 10 f vdropout (mv) 0 5 10 15 20 25 30 35 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device ienable (ua) 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 -40 -20 0 20 40 60 80 100 120 temperature ( o c) 3.3v device vth (v) figure 16. dropout voltage vs temperature at i load =1.5a
7 rev. 10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation application information the spx29150/51/52/53 incorporates protec- tion against over-current faults, reversed load insertion, over temperature operation, and positive and negative transient voltage. thermal considerations although the spx29150/51/52/53 offers limiting circuitry for overload conditions, it is still necessary to insure that the maximum junction temperature is not exceeded in the application. heat will flow through the lowest resistance path, the junction-to-case path. in order to insure the best thermal flow of the component, proper mounting is required. consult the heatsink manufacturer for thermal resistance and heat sink design. to-220 design example: assume that v in = 10v, v out = 5v, i out = 1.5a, t a = 50 c, ha = 1 c/w, ch = 2 c/w, and jc = 3c /w, where: t a = ambient temperature, ha = heatsink to ambient thermal resistance ch = case to heatsink thermal resistance jc = junction to case thermal resistance the power calculated under these conditions is: p d = (v in ?v out ) * i out = 7.5w. spx29150 v out v in 6.8 f + + 10 f 1 2 3 spx29152 v out v in gnd adj 1 2 3 4 5 r1 r2 6.8 f ++ 10 f figure 19. fixed output linear regulator figure 20. adjustable output linear regulator and the junction temperature is calculated as t j = t a + p d * ( ha + ch + jc ) or t j = 50 + 7.5 * (1+2+3) = 95 c reliable operation is insured. capacitor requirements the output capacitor is needed to insure stability and minimize the output noise. the value of the capacitor varies with the load. however, a minimum value of 10 f alumi- num capacitor will guarantee stability over all load conditions. a tantalum capacitor is recommended if a faster load transient response is needed. if the power source has a high ac impedance, a 0.1 f ceramic capaci- tor between input & ground is recommended. minimum load current to ensure a proper behavior of the regulator under light load, a minimum load of 5ma for spx29150/51/52/53 is required. typical application circuits figure 19 represents at typical fixed output regulator. figure 20 represents an adjustable output regulator. the values of r1 and r2 set the output voltage value as follows: v out =v ref * [1 + (r1/r2)]. for best results, the total series resistance should be small enough to pass a minimum regulator load current of 5ma. a minimum value of 10k ? is recom- mended for r2 with a range between 10k ? and 47k ? .
rev.10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation 8 please consult the factory for pricing and availability on a tape-on-reel option. ordering information part number accuracy output voltage package spx29150u-1.8 1.0% 1.8v 3 lead to-220 spx29150u-2.5 1.0% 2.5v 3 lead to-220 spx29150u-3.3 1.0% 3.3v 3 lead to-220 spx29150u-5.0 1.0% 5.0v 3 lead to-220 spx29150t-1.8 1.0% 1.8v 3 lead to-263 spx29150t-2.5 1.0% 2.5v 3 lead to-263 spx29150t-3.3 1.0% 3.3v 3 lead to-263 spx29150t-5.0 1.0% 5.0v 3 lead to-263 spx29151u5-1.8 1.0% 1.8v 5 lead to-220 spx29151u5-2.5 1.0% 2.5v 5 lead to-220 spx29151u5-3.3 1.0% 3.3v 5 lead to-220 spx29151u5-5.0 1.0% 5.0v 5 lead to-220 spx29151t5-1.8 1.0% 1.8v 5 lead to-263 spx29151t5-2.5 1.0% 2.5v 5 lead to-263 spx29151t5-3.3 1.0% 3.3v 5 lead to-263 spx29151t5-5.0 1.0% 5.0v 5 lead to-263 spx29152t5 1.0% adj 5 lead to-263 spx29152u5 1.0% adj 5 lead to-220 spx29153t5 1.0% adj 5 lead to-263 spx29153u5 1.0% adj 5 lead to-220 to-263-3 package (t) v out gnd v in front view 123 output to-263-5 package (t5) top view 45 3 2 1 gnd flag 1) 3) 4) 5) 2) input enable gnd adjust 1) 3) 4) 5) 2) input enable gnd adjust 1) 3) 4) 5) 2) input flag output output spx29151 spx29152 spx29153 front view to-220-3 package (u) v in v out gnd to-220-5 package (u5) top view 12345 output gnd flag 1) 3) 4) 5) 2) input enable output gnd adjust 1) 3) 4) 5) 2) input enable output gnd adjust 1) 3) 4) 5) 2) input flag spx29151 spx29152 spx29153 3 2 1 packages *tab is internally connected to gnd
9 rev. 10/08/03 sp29150/51/52/53 1.5a low dropout voltage regulator ?copyright 2002 sipex corporation corporation signal processing excellence sipex corporation reserves the right to make changes to any products described herein. sipex does not assume any liability aris ing out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor t he rights of others. sipex corporation headquarters and sales office 233 south hillview drive milpitas, ca 95035 tel: (408) 934-7500 fax: (408) 935-7600 sales office 22 linnell circle billerica, ma 01821 tel: (978) 667-8700 fax: (978) 670-9001 e-mail: sales@sipex.com
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