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dual input low dropout regulator copyright ? anpec electronics corp. rev. a.8 - oct., 2003 apl1581 www.anpec.com.tw 1 anpec reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. features general description the apl1581 series of high performance positive volt- age regulators are designed for use in applications requiring very low dropout voltage at 5amp. the apl1581 can provide a output voltage at the range of 1.25v to 2.55v , where both 5v and 3.3v voltage supplies are available. the superior dropout characteristics result in reduced heat dissipation compared to regular ldos. the apl1581 also provides excellent regulation over line , load , and temperature variations. current limit is trimmed to ensure specified output current and controlled short-circuit current. on-chip thermal limiting provides protection against any com- bination of overload that would create excessive junc- tion temperature. the apl1581 is available in both the through-hole and surface mount versions of the industry standard 5-pin to-220 and to-263, to-252 power packages. applications ? microprocessor supplies ? ! chip set supplies ? vga card power ? lcd monitor power ordering and marking information ? ? ? ? ? adjustable or fixed output ? ? ? ? ? 520mv typ. dropout at 5a in dual power voltage mode ? ? ? ? ? remote sense pin available ? ? ? ? ? 2% accuracy over temperature range ? ? ? ? ? build-in over temperature protection ? ? ? ? ? build-in current limit ? ? ? ? ? 5 pin to-220 and to-263, to-252 packages ? ? ? ? ? no supply sequencing problems in dual supply mode package code f5 : to -220-5 g 5 : to -263-5 u 5 :to -252-5 temp. range c : 0 to 70 c handling code tu : tube tr : tape & r eel voltage code : 15 : 1.5v 18 : 1.8v 25 : 2.5v apl1581 handling code temp. range package code voltage code apl1581f/g/u : apl1581 xxxxx xxxxx - date code apl1581-15 : apl1581 xxxxx xxxxx - date code 15 o
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 2 pin no. name i/o description 1v sense i positive side of the reference voltage, which allows remote sensing to obtain excellent load regulation. adj o negative side of the reference voltage, which allows to use resistor divider to set an expect output voltage. a small bypass capacitor can be connected from this pin to ground to improve psrr performance. 2 gnd o for fixed voltage devices this is the bottom of the resistor divider that sets the output voltage. 3v out o output pin of the regulator, which connects to the tab. a minimum of 10 f capacitor must be connected from this pin to ground to ensure the stability. 4v control i supply pin of the control circuitry, which must be always higher than v out for the device to regulate. (see electrical characteristics) 5v in i power input pin of the regulator, which must be always higher than v out for the device to regulate. (see electrical characteristics) block diagram pin configuration pin description current limit voltage regulation thermal protection v in v control v out adj/gnd v sense v s e n s e a d j(or g n d ) v o u t v c o n tr o l v in 1 2 3 4 5 ta b is v o u t v sense adj(or gnd) v out v control v in 1 2 3 4 5 tab is v out front view of to-220-5 front view of to-263-5 v in v control v out adj(or gnd) v sense 1 2 3 4 5 tab is v out front view of to-252-5
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 3 symbol parameter rating unit v in input voltage 7 v v control control voltage 13.2 v q ja thermal resistance ? junction to ambient 62.5 c/w p d power dissipation internally limited w t j operating junction temperature c control section 0 to 125 power transistor 0 to 150 t stg storage temperature range -65 to +150 c t l lead temperature (soldering, 10 second) 260 c absolute maximum ratings electrical characteristics unless otherwise noted , these specifications apply over c in =10uf , c control =1uf , c out =10uf , and t j =0 to 125c. typical values refer to t j =25c. v out =v sense . apl1581 symbol parameter test conditions min typ max unit v ref reference voltage apl1581 v control =2.75~12v, v in =2.05~5.5v, i o =10ma~5a, v adj =0v 1.225 1.250 1.275 v v out output voltage apl1581-15 apl1581-18 apl1581-25 (i o =0~5a for fixed versions) v control =3~12v , v in =2.3~5.5v v control =3.3~12v , v in =2.6~5.5v v control =4~12v , v in =3.3~5.5v 1.470 1.764 2.450 1.500 1.800 2.500 1.530 1.836 2.550 v reg line line regulation apl1581 apl1581-15 apl1581-18 apl1581-25 (i o =0a for fixed versions) v control =2.75~12v, v in =1.75~5.5v, i o =10ma, v adj =0v v control =3~12v, v in =2.3~5.5v v control =3.3~12v, v in =2.6~5.5v v control =4~12v, v in =3~5.5v 3mv reg load load regulation (note 1) apl1581 apl1581-15 apl1581-18 apl1581-25 (i o =0~5a for fixed versions) v control =2.75v, v in =2.1v, v adj =0v, i o =10ma~5a v control =3v, v in =2.35v v control =3.3v, v in =2.65v v control =4v, v in =3.35v 5mv v control -v out dropout voltage (note 2) apl1581 apl1581-15 apl1581-18 apl1581-25 i o =5a for all versions v in =2.05v, v adj =0v v in =2.3v v in =2.6v v in =3.3v 1.20 1.35 v v in -v out dropout voltage (note 2) apl1581 apl1581-15 apl1581-18 apl1581-25 i o =5a for all versions v control =2.75v, v adj =0v v control =3v v control =3.3v v control =4v 0.52 0.75 v i limit current limit v control -v out =1.5v, v in -v out =0.6v 5 a i lmin minimum load current (note 3) apl1581 v control =5v, v in =3.3v, v adj =0v 0.8 10 ma reg thermal thermal regulation 30ms pulse 0.01 % /w
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 4 note 1 : low duty cycle pulse test with kelvin con- nections are required to maintain data accuracy . note 2 : dropout voltage is defined as the minimum difference between v in and v out required to maintain 1% v out regulation . note 3 : minimum load current is defined as the mini- mum current required at the output to maintain v out regulation. application circuit ? v out = v ref ( 1+ r2 / r1 ) + i adj * r2 ? r1 is typically in range of 100 ? to 125 ? to satisfy the minimum load current requirement v sense v out v in apl1581 adj v control gnd 2.5v gnd 5.0v 3.3v 5 4 2 1 3 r2 125 ? r1 125 ? v ref -+ apl1581 symbol parameter test conditions min typ max unit psrr power supply ripple rejection apl1581 apl1581-15 apl1581-18 apl1581-25 v ripple =1v pp at 120hz, i o =5a v control =5v, v in =5v, v adj =0v v control =5.25v, v in =5.25v v control =5.55v, v in =5.55v v control =6.25v, v in =6.25v 60 70 db i control control pin current v control -v out =1.5v , v in -v out =0.8v, i o =5a 45 120 ma i gnd ground pin current apl1581-15 apl1581-18 apl1581-25 v control =3v, v in =2.3v v control =3.3v, v in =2.6v v control =4v, v in =3.3v 813ma i adj adjust pin current apl1581 v control =2.75v , v in =2.05v , v adj =0v 50 120 a q jc junction-to-case thermal resistance power transistor 3.0 c/w unless otherwise noted , these specifications apply over c in =10uf , c control =1uf , c out =10uf , and t j =0 to 125c. typical values refer to t j =25c. v out =v sense . electrical characteristics cont.
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 5 application circuit v sense v out v in apl1581-25 gnd v control gnd 2.5v gnd 5.0v 3.3v 5 41 3
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 6 0 100 200 300 400 500 600 700 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 typical characteristics 1.225 1.230 1.235 1.240 1.245 1.250 1.255 1.260 1.265 1.270 1.275 -50-250 255075100125150 reference voltage vs junction temperature junction temperature (c) reference voltage (v) 0 10 20 30 40 50 60 70 80 -50 -25 0 25 50 75 100 125 150 adjust pin current vs junction temperature adjust pin current (ua) junction temperature (c) 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 1. 2 -50-25 0 255075100125150 minimum load current vs junction temperature junction temperature (c) minimum load current (ma) v control -v out =10.75v v control -v out =1.45v v in -v out dropout voltage vs output current v in -v out dropout voltage (mv) output current (a) t j =125c t j =25c t j =-50c
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 7 0 10 20 30 40 50 60 70 80 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0. 7 0. 8 0. 9 1. 0 1. 1 1. 2 1. 3 1. 4 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 20 40 60 80 10 0 12 0 14 0 16 0 00.511.522.533.544.55 typical characteristics 0 2 4 6 8 10 12 14 - 50 - 25 0 25 50 75 100 125 150 short-circuit current vs junction temperature junction temperature (c) short-circuit current (a) v in =5.0v v in =3.3v v control -v out dropout voltaage vs output current v control -v out dropout voltaage (v) output current (a) t j =0c t j =-50c t j =25c t j =125c control pin current vs output current output current (a) control pin current (ma) t j =0c t j =25c t j =75c t j =-50c t j =125c v in- v out =0.6v output current (a) v in- v out =0.8v control pin current (ma) control pin current vs output current t j =0c t j =25c t j =75c t j =-50c t j =125c
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 8 0 10 20 30 40 50 60 70 80 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 10 20 30 40 50 60 70 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 typical characteristics control pin current vs output current control pin current vs output current output current (a) control pin current (ma) t j =25c t j =75c t j =125c v in- v out =1.0v t j =0c t j =-50c output current (a) control pin current (ma) t j =25c t j =75c v in- v out =4.25v t j =0c t j =-50c t j =125c
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 9 q d r e e b e1 f a c h1 j1 l millimeters inches dim min. max. min. max. a 3.55 4.83 1.140 0.190 b 0.63 1.02 0.025 0.040 c 0.35 0.56 0.014 0.022 d 14.22 16.51 0.560 0.650 e 1.57 1.83 0.062 0.072 e1 6.68 6.94 0.263 0.273 e 9.65 10.67 0.380 0.420 f 1.14 1.40 0.045 0.055 h1 5.84 6.60 0.230 0.260 j1 2.03 3.05 0.080 0.120 l 13.72 14.22 0.540 0.560 r 3.53 4.09 0.139 0.161 q 2.54 3.43 0.100 0.135 package information to-220-5
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 10 package information to-263-5 a c1 e d l l2 b1 b c l1 millimeters inches dim min. max. min. max. a 4.06 4.83 0.160 0.190 b 0.50 0.99 0.020 0.039 b1 1.52 1.83 0.060 0.072 c 0.457 0.736 0.018 0.029 c1 1.14 1.40 0.045 0.055 d 8.25 9.66 0.325 0.380 e 9.65 10.29 0.380 0.405 l 14.60 15.88 0.575 0.625 l1 2.28 2.80 0.090 0.110 l2 1.40 0.055
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 11 a b m c d j h l p s k e1 d1 packaging information to-252-5 m illim eters inches dim min. max. min. max. a 6.40 6.80 0.25 0.26 b 5.20 5.50 0.20 0.21 c 6.80 7.20 0.26 0.27 d 2.20 2.80 0.08 0.11 d1 5.2ref 0.205ref e1 5.3ref 0.209ref p 1.27ref 0.05ref s 0.50 0.80 0.02 0.03 h 2.20 2.40 0.08 0.09 j 0.45 0.55 0.01 0.02 k 0.45 0.60 0.018 0.024 l 0.90 1.50 0.03 0.06 m 5.40 5.80 0.21 0.22
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 12 reference jedec standard j-std-020a april 1999 reflow condition (ir/convection or vpr reflow) physical specifications pre-heat temperature 183 c peak temperature time temperature convection or ir/ convection vpr average ramp-up rate(183 c to peak) 3 c/second max. 10 c /second max. preheat temperature 125 25 c) 120 seconds max. temperature maintained above 183 c 60 ~ 150 seconds time within 5 c of actual peak temperature 10 ~ 20 seconds 60 seconds peak temperature range 220 +5/-0 c or 235 +5/-0 c 215~ 219 c or 235 +5/-0 c ramp-down rate 6 c /second max. 10 c /second max. time 25 c to peak temperature 6 minutes max. pkg. thickness 2.5mm and all bags pkg. thickness < 2.5mm and pkg. volume 350 mm pkg. thickness < 2.5mm and pkg. volume < convection 220 +5/-0 c convection 235 +5/-0 c vpr 215-219 c vpr 235 +5/-0 c ir/convection 220 +5/-0 c ir/convection 235 +5/-0 c classification reflow profiles terminal material solder-plated copper (solder material : 90/10 or 63/37 snpb). lead solderability meets eia specification rsi86-91, ansi/j-std-002 category 3.
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 13 reliability test program test item method description solderability mil-std-883d-2003 245 c , 5 sec holt mil-std-883d-1005.7 1000 hrs bias @ 125 c pct jesd-22-b, a102 168 hrs, 100 % rh , 121 c tst mil-std-883d-1011.9 -65 c ~ 150 c, 200 cycles esd mil-std-883d-3015.7 vhbm > 2kv, vmm > 200v latch-up jesd 78 10ms , i tr > 100ma application a b c j t1 t2 w p e 380 3 80 2 13 0. 5 2 0.5 24 4 2 0.3 24 + 0.3 - 0.1 16 0.1 1.75 0.1 f d d1 po p1 ao bo ko t to-263 11.5 0.1 1.5 +0.1 1.5 0.25 4.0 0.1 2.0 0.1 10.8 0.1 16.1 0.1 5.2 0.1 0.35 0.013 application a b c j t1 t2 w p e 330 3 100 2 13 0. 5 2 0.5 16.4 + 0.3 -0.2 2.5 0.5 16+ 0.3 - 0.1 8 0.1 1.75 0.1 f d d1 po p1 ao bo ko t to-252 7.5 0.1 1.5 +0.1 1.5 0.25 4.0 0.1 2.0 0.1 6.8 0.1 10.4 0.1 2.5 0.1 0.3 0.05 (mm) a j b t2 t1 c t ao e w po p ko bo d1 d f p1 carrier tape & reel dimension
copyright ? anpec electronics corp. rev. a.8- oct., 2003 apl1581 www.anpec.com.tw 14 anpec electronics corp. head office : 5f, no. 2 li-hsin road, sbip, hsin-chu, taiwan, r.o.c. tel : 886-3-5642000 fax : 886-3-5642050 taipei branch : 7f, no. 137, lane 235, pac chiao rd., hsin tien city, taipei hsien, taiwan, r. o. c. tel : 886-2-89191368 fax : 886-2-89191369 customer service cover tape dimensions application carrier width cover tape width devices per reel to- 263 24 21.3 1000 to- 252 16 13.3 2500

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