unisonic technologies co., ltd lr9xxyy advance cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2015 unisonic technologies co., ltd qw-r102-070.a 300ma small dual ldo regulator ? description the utc lr9xxyy 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 cont ains dual ldo regulator, both of them includes a voltage reference, an error amplifier, resistors for setting output voltage, a current limit circuit, and a chip enable circuit. the utc lr9xxyy 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. 50 a2 (vr1&vr2) * standby current: typ. 0.1 a2 (vr1&vr2) * input voltage rang e: 1.4v~5.25v * output voltage range: 0.8v~3.7v (0.1v steps) (for details, please refer to mark specification table) * output voltage accuracy: 1.0% (v set >2.0v, t opt =25c) * temperature-drift coefficient of output voltage: typ. 80ppm/c * dropout voltage: typ. 0.25v (i out =300ma, v set =2.5v) * ripple rejection: typ. 75db (f=1khz) * line regulation: typ. 0.02%/v * built-in fold back protection circuit: typ. 60ma (current at short mode) * ceramic capacitors are recommended to be used with this ic: 1.0 f or more sot-23-6 (jdede to-236) 4 5 3 2 1 6 ? rdering information ordering number package packing LR9XXYYBG-AE6-R sot-23-6 tape reel note: xxyy: output voltage, refer to marki ng information. (1) r: tape reel (2) ae6: sot-23-6 (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 LR9XXYYBG-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
lr9xxyy advance cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r102-070.a ? marking informations voltage code marking package code x code y 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 sot-23-6 9 3.6v 9 3.6v ? pin configuration ? pin description pin no. pin name description 1 ce1 chip enable pin 1 (?h? active) 2 v dd input pin 3 ce2 chip enable pin 2 (?h? active) 4 v out2 output pin 2 5 gnd ground pin 6 v out1 output pin 1
lr9xxyy advance cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r102-070.a ? block diagram ce1 v dd ce2 v out1 gnd v out2 - + - + vref current limit vref current limit utc lr9xxyyb (with auto discharge )
lr9xxyy advance cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r102-070.a ? 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 out1, v out2 -0.3~v in +0.3 v output current i out1, i out2 400 ma power dissipation p d 420 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. values surrounded by boldface indicate the values under a ll temperature range, or -40c t a 85c) (t a =25c) parameter symbol test conditions min typ max unit v set >2.0v x 0.99 x 1.01 v t opt =25c v set 2.0v -20 +20 mv v set >2.0v x 0.97 x 1.03 v output voltage v out -40c t opt 85c v set 2.0v -60 +60 mv output current i out 300 ma load regulation out out ? v ? i 1ma i out 300ma 15 40 mv v out =0.8v 0.56 0.72 v out =0.9v 0.51 0.65 1.0v v out <1.2v 0.46 0.59 1.2v v out <1.4v 0.39 0.50 1.4v v out <1.7v 0.35 0.44 1.7v v out <2.1v 0.30 0.39 2.1v v out <2.5v 0.26 0.34 2.5v v out <3.0v 0.25 0.30 dropout voltage v dif i out =300ma v out =0.8v 0.22 0.29 v supply current i ss i out =0ma 50 75 a supply current (standby) i standby v ce =0v 0.1 1.0 a line regulation out in ? v ? v v set +0.5v v in 5.25v (v in 1.4v) 0.02 0.10 %/v ripple rejection rr f=1khz, ripple 0.2vp-p v in =v set +1v, i out =30ma (in case that v set 2.0v, v in =3v) 75 db input voltage (note 1) v in 1.40 5.25 v output voltage temperature coefficient out opt ? v ? t -40c t opt 85c 80 ppm short current limit i sc v out =0v 60 ma ce pull-down current i pd 0.3 0.6 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 75 vrms low output nch tr. on resistance (of b version) r low v in =4.0v, v ce =0v 50 ? notes: 1. the maximum input voltage of the electrical characteristics is 5.25v. in case of exceeding this specification, the ic must be operated on condition that the input voltage is up to 5.5v and the total operating time is within 500hrs. 2. all of unit are tested and specified under load conditions such that t j t opt =25c except for output noise, ripple rejection, output voltage temperature coefficient and thermal shutdown.
lr9xxyy advance cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r102-070.a ? 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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