unisonic technologies co., ltd lr8xxyy preliminary cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2016 unisonic technologies co., ltd qw-r102-069.c 150ma dual ldo regulator ? description the utc lr8xxyy series are a low dropout regulator with high output voltage accuracy, low quiescent current, low dropout, and high ripple rejection. this regulator is based on a cmos process. each of these regulator ics contains dual ldo regulator, both of them includes a voltage reference, an error amplifier, resistors for setting output voltag e, a current limit circuit, and a chip enable circuit. the utc lr8xxyy series exhibit ultra excellent line transient response and load transient response, thus they are very suitable for the power supply for hand-held communication equipment. ? features * supply current: typ. 40 a (vr1, vr2) * standby mode: typ. 0.1 a (vr1, vr2) * low dropout voltage: typ. 0.22v(i out =150ma, v out =2.8v) * high ripple rejection: typ. 70db (f=1khz), typ. 65db (f=10khz) * high output voltage accuracy: 1.0% * low temperature-drift coeffi cient of output voltage: typ. 80ppm/c * excellent line regulation: typ. 0.02%/v * built-in fold back protection circuit typ. 40ma (current at short mode) * ceramic capacitors are recommended to be used with this ic 0.22 f or more sot-23-6 (jdede to-236) 4 5 3 2 1 6 dfn-6(1.6x1.6) 1 ? rdering information ordering number package packing LR8XXYYBG-AE6-R sot-23-6 tape reel lr8xxyybg-k06-1616-r dfn- 6(1.61.6) tape reel note: xxyy: output voltage, refer to marki ng information. (1) r: tape reel (2) ae6: sot-23-6, k06-1616: dfn-6(1.61.6) (3) g: halogen free and lead free (4) b: without auto-discharge function at off state (5) yy: refer to marking information (6) xx: refer to marking information LR8XXYYBG-AE6-R (1)packing type (2)package type (3)green package (4)discharge function (5)voltage code at v out2 (6)voltage code at v out1
lr8xxyy preliminary cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r102-069.c ? marking informations voltage code marking package code x code y sot-23-6 exyb 1 23 4 5 6 voltage code at v out1 voltage code at v out2 discharge function dfn-6(1.61.6) 1 1.2v 1 1.2v 2 1.5v 2 1.5v 3 1.8v 3 1.8v 4 2.0v 4 2.0v 5 2.5v 5 2.5v 6 2.8v 6 2.8v 7 3.0v 7 3.0v 8 3.3v 8 3.3v 9 3.6v 9 3.6v ? pin configuration ? pin description pin no. sot-23-6 dfn-6(1.61.6) pin name description 1 3 ce1 chip enable pin 1 (?h? active) 2 2 v dd input pin 3 1 ce2 chip enable pin 2 (?h? active) 4 6 v out2 output pin 2 5 4 gnd ground pin 6 5 v out1 output pin 1
lr8xxyy preliminary cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r102-069.c ? block diagram ce1 v dd ce2 v out1 gnd v out2 - + - + vref current limit vref current limit utc lr8xxyyb (with auto discharge )
lr8xxyy preliminary cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r102-069.c ? absolute maximum ratings parameter symbol ratings unit input voltage v in 6.0 v input voltage (ce pin) v ce -0.3 ~ 6.0 v output voltage v out -0.3 ~ v in +0.3 v output current 1 i out1 180 ma output current 2 i out2 180 ma sot-23-6 420 mw power dissipation dfn-6(1.61.6) p d 138 mw operating temperature range t opr -40 ~ +85 c storage temperature range t stg -55 ~ +125 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (v in =set v out +1.0v for v out options greater than 1.5v, v in =2.5v for v out 1.5v, i out =1ma, c in =c out =0.22 f unless otherwise noted. (t a =25c)) parameter symbol test conditions min typ max unit v out >2.0v x 0.99 x 1.01 v output voltage v out t a =25c v out 2.0v -20 +20 mv output current i out 150 ma 0.8v v out <1.1v 10 1.1v v out <1.6v 15 1.6v v out <2.0v 15 load regulation out out ? v ? i 1ma i out 150ma 2.0v v out 3.6v 15 mv v out =0.8v 0.63 v out =0.9v 0.55 1.0v v out <1.2v 0.50 1.2v v out <1.4v 0.42 1.4v v out <1.7v 0.37 1.7v v out <2.1v 0.30 2.1v v out <2.5v 0.25 2.5v v out <3.0v 0.23 dropout voltage v dif i out =150ma 3.0v v out 3.6v 0.21 v supply current i ss i out =0ma 50 60 a supply current (standby) i standby v ce =0v 0.1 a line regulation out in ? v ? v set v out +0.5v v in 5.0v 0.02 %/v ripple rejection rr f=1khz, ripple 0.2vp-p, v in =set v out +1.0v, i out =30ma (in case v out 2.0v, v in =3.0v) 70 db input voltage (note 1) v in 5.25 v output voltage temperature coefficient out opt ? v ? t -40c ta 85c 80 ppm short current i lim v out =0v 40 ma
lr8xxyy preliminary cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r102-069.c ? electrical characteristics (cont.) parameter symbol test conditions min typ max unit ce pull-down current i pd 0.3 a ce input voltage ?h? v ceh 1.0 v ce input voltage ?l? v cel 0.4 v output noise en bw=10hz ~ 100khz 60 vrms c ver. (vr2) 10 ? nch on resistance for auto discharge (b/c/e version only) r low v in =4.0v, v ce =0v others 50 ? notes: 1. the specification in boldface is checked and guaranteed by design engineering. 2. all of unit are tested and specified under load conditions such that t j t a =25c except for output noise, ripple rejection and output voltage temperature coefficient items. 3. the maximum input voltage of the electrical chara cteristics is 5.25v. in case of exceeding this specification, the ic must be oper ated on condition that the input voltage is up to 5.5v and the total operating time is within 500hrs.
lr8xxyy preliminary cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r102-069.c ? typical application circuit utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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