unisonic technologies co., ltd lr1198 cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2018 unisonic technologies co., ltd qw-r102-077.e 300ma, ultra-low noise, ultra-fast cmos ldo regulator ? description the lr1198 low-noise, low-dropout, linear regulator operates from a 2.5v to 5.5v input and is guaranteed to deliver 300ma. the lr1198 is designed and optimized for battery-powered systems to work with low noise and low quiescent current. for further reduction of output noise, a noise bypass pin is available. the lr1198 also requires only 1 f (typ.) of output capacitance for stability with any load, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. the lr1198 consumes less than 0.01 a in shutdown mode. the other features include ultra low dropout voltage, current limiting protection, thermal shut down protection and high ripple rejection ratio. ? features * 300ma guaranteed output current * 0.01 a shutdown current * 550mv dropout at 300ma load * low temperature coefficient * current limiting protection * thermal shutdown protection * only 1 f output capacitor r equired for stability * excellent line/load transient ? ordering information ordering number lead free halogen free package packing lr1198l-xx-ae5-a-r lr1198g-xx-ae5-a-r sot-23-5 tape reel lr1198l-xx-ae5-c-r lr1198g-xx-ae5-c-r sot-23-5 tape reel lr1198g-xx-ae5-a-r (1) r: tape reel (2) refer to pin configuration (3) ae5: sot-23-5 (4) xx: refer to marking information (5) g: halogen free and lead free, k: lead free (1) packing type (2) pin code (3) package type (4) output voltage code (5) green package
lr1198 cmos ic unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r102-077.e ? marking package voltage code marking sot-23-5 15: 1.5v 28: 2.8v 30: 3.0v ? pin configuration ? pin description pin no. a c pin name description 1 5 v in power input voltage 2 3 gnd ground 3 1 en chip enable (activ e high). en is internally pulled up by a resistor.it can be floating for normal operate. 4 2 n.c 5 4 v out output voltage ? block diagram
lr1198 cmos ic unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r102-077.e ? absolute maximum rating (note 1) parameter symbol ratings unit supply input voltage (operating) 2.5 ~ 5.5 supply input voltage (survival) v in -0.3 ~ +6 v junction temperature t j +125 c operation temperature range t opr -40 ~ +85 c storage temperature range t stg -65 ~ +150 c ? electrical characteristics (v in = v out + 1v, c in = c out = 1uf, t a = 25c, unless otherwise specified) parameter symbol test conditions min typ max unit output voltage accuracy ? v out i out = 1ma -2 +2 % current limit i lim 200 360 ma quiescent current i q v en 1.2v, i out = 0ma 90 150 a i out = 200ma 500 600 dropout voltage (note 3) v drop i out = 300ma 550 650 mv line regulation ? v line v in = (v out + 0.3v) to 5.5v i out = 1ma 0.3 % load regulation ? v load 1ma < i out < 300ma 0.6 % standby current i stby v en = gnd, shutdown 0.01 5 a i enh v en = v in 0.01 3 a en input current i enl v en = gnd 3 10 a v ih v in = 3 ~ 5.5v, start-up 1.6 en threshold v il v in = 3 ~ 5.5v, shutdown 0.4 v power supply rejection rate psrr c out = 1 f, i out = 10ma, f=10khz 50 db thermal shutdown temperature t sd 165 c thermal shutdown temperature hysteresis ? t sd 30 c notes: 1. limits beyond which damage to the device ma y occur is indicated by absolute maximum ratings. conditions for which the device is in tended to be functional is indicated by operating ratings, but specific performance limits isn?t be guaranteed. only for the te st conditions listed the guaranteed specifications can be applied. when the device is not operated un der the listed test conditions some performance characteristics may degrade. 2. which discharged through a 1.5k ? resistor into each pin is a 100pf capacitor in the human body model. 3. the dropout voltage is defined as v in -v out , which is measured when v out is v out(normal) ? 100mv.
lr1198 cmos ic unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r102-077.e ? 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. utc reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof.
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