ap1120 dual 1a low dropout positive regulator this datasheet contains new product information. anachip corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev. 0.2 feb.10, 2004 1/5 features ? 1.3v maximum dropout at full load current ? fast transient response ? output current limiting for each channel. ? built-in thermal shutdown each channel. ? good noise rejection ? dual output ch1=3.3v, ch2=2.5v (1.8v for b version) ? packages: sop-8l applications ? pc peripheral ? communication general description ap1120 series are low dropout positive regulator with minimum of 1a output current capability. the product is specifically designed to provide well-regulated supply for low voltage ic applications such as high-speed bus termination and low current 3.3v/2.5v or 3.3v/1.8v logic supply. ap1120 series are guaranteed to have <1.3v dropout at full load current making it ideal to provide well regulated outputs dual channels with up to 18v input supply. connection diagram ap1120 7 5 4 3 2 1 6 gnd2 vin1 3.3v gnd1 vin2 (top view) 2.5v (1.8v) 8 3.3v 2.5v (1.8v) pin descriptions name function gnd1/2 ground 3.3v(vout1) 2.5v/1.8v (vout2) the output of the regulator. a minimum of 10uf capacitor must be connected from this pin to ground to insure stability. vin1/2 the input pin of regulator. typically a large storage capacitor is connected from this pin to ground. ordering information ap 1120 x x x x package vout s : sop-8l packing blank : tube a : taping blank : ch1=3.3v ch2=2.5v b : ch1=3.3v ch2=1.8v lead free blank : normal l : lead free package
ap1120 dual 1a low dropout positive regulator anachip corp. www.anachip.com.tw rev. 0.2 feb.10, 2004 2/5 typical circuit 5v 3.3v/1a ( 3.3v/2.5v dual output ) c2 100uf vin1 3.3v gnd1 gnd2 vin2 3.3v 2.5v 2.5v c1 100uf c3 100uf 2.5v/1a absolute maximum ratings symbol parameter rating unit v in dc supply voltage -0.3 to 18 v v p d power dissipation internally limited t st storage temperature -65 to +150 o c t op operating junction temperature range 0 to +150 o c block diagram 2 thermal shutdown 7,8 vout 1 1.25v + + current limit vin 1 - + - + 1 gnd 1 4 thermal shutdown 5,6 vout 2 1.25v + + current limit vin 2 - + - + 3 gnd 2
ap1120 dual 1a low dropout positive regulator anachip corp. www.anachip.com.tw rev. 0.2 jan.28, 2004 3/6 electrical characteristics (under operating conditions) parameter conditions min typ max unit ap1120(b) - v out1 i out = 10ma, t j = 25 o c, 4.8v Q v in Q 12v 3.235 3.300 3.365 v ap1120 - v out2 i out = 10ma, t j = 25 o c, 4v Q v in Q 12v 2.450 2.500 2.550 v output voltage ap1120b - v out2 i out = 10ma, t j = 25 o c, 4v Q v in Q 12v 1.764 1.800 1.836 v line regulation i o =10ma,v out +1.5v> 5.5mm*5.5mm (like 10mm*10mm).
ap1120 dual 1a low dropout positive regulator anachip corp. www.anachip.com.tw rev. 0.2 feb.10, 2004 4/5 typical performance characteristics temperature ( o c) percent change in output voltage vs temperature output voltage change (%) -50 -25 0 25 50 75 100 125 150 - 2 -1.5 - 1 -0.5 0 0. 5 1 1.5 2 input voltage (v) line regulation output voltage deviation (%) 0 0.2 0.4 0.6 0.8 1 24 6 8 10 12 time (us) line transient res p onse output voltage deviation (mv) input voltage (v) -40 -20 0 20 40 5.5 6.5 7.5 cin=1uf cout=10uf tantalum 0 20 40 60 80 100 120 140 160 180 200 time (us) load transient res p onse load current (a) output voltage deviation (mv) 010 20 30 40 50 60 70 80 90 100 -1 0 1 2 -20 -10 0 10 20 30 c in = 1uf c out = 10 uf tantalum preload = 100ma output current (ma) dropout voltage vs output current dropout voltage (v) 0 0. 2 0. 4 0. 6 0. 8 1. 0 1. 2 1. 4 1. 6 1. 8 2. 0 0 200 400 600 800 tj = 125 o c tj = 25 o c temperature ( o c) load regulation vs temperature output voltage deviation (%) -25 0 25 50 75 100 125 - 1 -0.80 -0.40 -0.20 0 0.20 i load=800ma
ap1120 dual 1a low dropout positive regulator anachip corp. www.anachip.com.tw rev. 0.2 feb.10, 2004 5/5 marking information sop-8l ( top view ) logo blank : 3.3v/2.5v version b : 3.3v/1.8v version id code: internal year: "01" =2001 "02" =2002 xth week: 01~52 ~ 1 8 5 ac ap1120 x yy ww x x blank: normal l: lead free package 4 package information view "a" l c view "a" h e a a2 a1 b e d 7 (4x) 0.015x45 7 (4x) y dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.40 1.60 1.75 0.055 0.063 0.069 a1 0.10 - 0.25 0.040 - 0.100 a2 1.30 1.45 1.50 0.051 0.057 0.059 b 0.33 0.41 0.51 0.013 0.016 0.020 c 0.19 0.20 0.25 0.0075 0.008 0.010 d 4.80 5.05 5.30 0.189 0.199 0.209 e 3.70 3.90 4.10 0.146 0.154 0.161 e - 1.27 - - 0.050 - h 5.79 5.99 6.20 0.228 0.236 0.244 l 0.38 0.71 1.27 0.015 0.028 0.050 y - - 0.10 - - 0.004 0 o - 8 o 0 o - 8 o
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