unisonic technologies co., ltd lr6401 cmos ic www.unisonic.com.tw 1 of 8 copyright ? 2017 unisonic technologies co., ltd qw-r502-332.p dual channel ldo regulators with enable function ? description the utc lr6401 is a low noise and high accuracy ldo voltage regulator which has enable soft start function. designers can reduce power consumption more easily by applying en function that can turn off the output of each device and control the in rush current through the soft t he start function. the utc lr6401 comes with low design cost and outstanding output stability and its co mpatibility of working with low esr ceramic capacitors is undoubted. besides, and this level of stability is ensured by the perfect transient response and psrr derived from a large frequency range. ? features * v d =150mv @ 100ma (typ.), v out 2.8v * range of operating voltage:2.5v ~ 6.0v * range of output volt age range:1.2v ~ 4.0v * range of output current:300ma / channel * low power consumption:30 a (typ.) for each channel * standby current:0.1 a (typ.) * accurate 2 % * high psrr: 65 db * each channel output current limit protection:450ma * with short circuit protection * output on/off control function sot-26 4 5 3 2 1 6 dfn-1820-6 1 ? ordering information ordering number lead free halogen free package packing lr6401xl-al6-r lr6401xg-ag6-r sot-26 tape reel lr6401xl-k06-1820-r lr6401xg-k06-1820-r dfn1820-6 tape reel note: x: output voltage, re fer to marking information.
lr6401 cmos ic unisonic technologies co., ltd 2 of 8 www.unisonic.com.tw qw-r502-332.p ? marking information package voltage voltage code marking sot-26 dfn1820-6 1.8v + 3.3v 1.8v + 2.8v 2.5v + 3.3v 2.8v + 3.3v 2.8v + 1.8v 3.3v + 2.8v 2.85v + 2.85v 1.2v + 2.8v 1.5v + 2.8v 1.2v + 1.8v a b c d e f h m n p ? pin configuration ? pin description pin no. sot-26 dfn1820-6 pin name description 1 1 en1 channel 1?s output enable control pin 2 2 v in voltage input pin 3 3 en2 channel 2?s output enable control pin 4 6 v out2 channel 2?s voltage output 5 4 gnd ground 6 5 v out1 channel 1?s voltage output
lr6401 cmos ic unisonic technologies co., ltd 3 of 8 www.unisonic.com.tw qw-r502-332.p ? block diagram on/off control voltage reference thermal shutdown on/off control voltage reference thermal shutdown current limit current limit er er + - + - v out2 v out1 en2 gnd v in en1 r11 r12 r22 r21 channel 1 channel 2
lr6401 cmos ic unisonic technologies co., ltd 4 of 8 www.unisonic.com.tw qw-r502-332.p ? absolute maximum rating parameter symbol ratings unit input voltage v in 7.0 v en pin voltage v en v ss -0.3~v in +0.3 v output voltage v out v ss -0.3~v in +0.3 v output current i out1 +i out2 700 ma sot-26 400 power dissipation dfn1820-6 p d 1000 mw junction temperature t j 150 c operating temperature t opr -40~+85 c storage temperature 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. ? thermal data parameter symbol ratings unit sot-26 250 junction to ambient dfn1820-6 ja 100 c/w ? electrical characteristics (t a = 25c, unless otherwise specified.) (note 3) parameter symbol test conditions min typ max unit input voltage v in 2.5 6.0 v output voltage v out v in =v out +1.0v, i out =30ma v out 0.98 v out v out 1.02 v line regulation out in out v v ? v ? v out +1.0v v in 6.0v i out =1ma 0.02 0.1 %/v v in =v out +1.0v, 1ma i out 150ma 13 60 mv load regulation ? v out v in =v out +1.0v, 1ma i out 300ma 30 90 mv output current i out v out +1.0v v in 6v (note 1) 300 ma supply current i ss v in =v en =v out +1.0v, i out =0ma 60 90 a standby current i stn-by v in =v out +1.0v, v en =v ss 0.1 1 a current limite i limit v in =v out +1.0v, v in =v en 450 ma short-circuit current i sc v in =v out +1.0v, v in =v en 150 ma v out =1.2v 310 350 mv i out =100ma v out >1.2v 150 250 mv dropout voltage v d i out =300ma 450 750 mv high v ih (note 2) 1.2 v en pin input voltage low v il (note 2) 0.4 v temperature coefficient of output voltage t c v o i out =30ma, -25c t opr +85c 100 ppm/c over temperature shutdown ots 150 c over temperature hysteresis oth 40 c power supply rejection rate psrr i out =30ma, f=100hz 65 db notes: 1. measured using a double sided board with 1? x 2? square inches of copper area connected to the gnd pins for ?heat spreading?. 2. en pin input voltage must be always less than or equal to input voltage. 3. the minimum operating v in value is equal to [v out (nom)+ v dropout ] or 2.5v, just the greater.
lr6401 cmos ic unisonic technologies co., ltd 5 of 8 www.unisonic.com.tw qw-r502-332.p ? typical application circuit
lr6401 cmos ic unisonic technologies co., ltd 6 of 8 www.unisonic.com.tw qw-r502-332.p ? typical characteristics 800 700 600 500 400 300 200 100 0 0100 50 150 200 250 300 350 400 450 output current,i out (ma) dropout voltage,v d (mv) dropout voltage vs. output current v out =3.3v t a =25c i out =0~400ma c in =c out =1 f 3.5 4.0 4.5 5.0 5.5 6.0 1.79 1.80 1.795 1.805 1.81 1.815 1.82 1.825 1.83 output voltage,v out (v) input voltage,v in (v) output voltage vs. input voltage i out =100ma i out =30ma i out =0ma v out =1.8v t a =25c c in =c out =1 f 3.5 4.0 4.5 5.0 5.5 6.0 input voltage,v in (v) 3.29 3.295 3.30 3.31 3.305 3.315 3.32 3.325 3.33 i out =0ma i out =30ma i out =100ma v out =3.3v t a =25c c in =c out =1 f output voltage,v out (v) output voltage vs. input voltage v in =4.3v t a =25c c in =c out =1 f i out1 =0ma i out2 =10ma~100ma 0 10 -10 0 50 00.51.0 output voltage, v out1 (1.8v) (mv) 0 -50 50 output voltage,v out2 (3.3v) (mv) cross talk output current, i out2 (ma) 10ma 100ma 0 20 -20 output voltage, v out (mv) 0.5 1.0 0 time (ms) i out =1ma t a =25c c in =c out =1 f 2.8 input voltage, v in (v) 3.8 input transient reponse (v out =1.8v) input transient reponse (v out =1.8v) 0 50 -50 00.51.0 time (ms) 2.8 3.8 input voltage, v in (v) i out =30ma t a =25c c in =c out =1 f output voltage, v out (mv) time (ms)
lr6401 cmos ic unisonic technologies co., ltd 7 of 8 www.unisonic.com.tw qw-r502-332.p ? typical characteristics(cont.) 0.5 1.0 0 time (ms) 0 50 -50 output voltage, v out (mv) 2.8 3.8 input voltage, v in (v) input transient reponse (v out =1.8v) input transient reponse (v out =3.3v) 0.5 0 time (ms) i out =1ma t a =25c c in =c out =1 f 0 20 -20 output voltage, v out (mv) 4.3 5.3 input voltage, v in (v) i out =100ma t a =25c c in =c out =1 f 0 0.5 1.0 0 time (ms) input transient reponse (v out =3.3v) i out =30ma t a =25c c in =c out =1 f 0 50 -50 output voltage, v out (mv) 4.3 5.3 input voltage, v in (v) input transient reponse (v out =3.3v) 0.5 1.0 0 time (ms) 0 50 -50 i out =100ma t a =25c c in =c out =1 f output voltage, v out (mv) input voltage, v in (v) 4.3 5.3 0 load transient response (v out =1.8v) c in =c out1 =1 f i out1 =10ma~50ma v in =2.8v -20 0 20 output voltage, v out (mv) output current, i out (ma) 10 50 0.5 1.0 0 time (ms) 0.5 1.0 0 time (ms) load transient response (v out =1.8v) -50 0 50 output voltage, v out (mv) output current, i out (ma) 10 100 c in =c out1 =1 f i out1 =10ma~100ma v in =2.8v 1.0
lr6401 cmos ic unisonic technologies co., ltd 8 of 8 www.unisonic.com.tw qw-r502-332.p ? typical characteristics(cont.) 0.5 1.0 0 time (ms) load transient response (v out =3.3v) c in =c out1 =1 f i out1 =10ma~50ma v in =4.3v -20 0 20 output voltage, v out (mv) output current, i out (ma) 10 50 load transient response (v out =3.3v) c in =c out1 =1 f i out1 =10ma~100ma v in =4.3v 0.5 1.0 0 time (ms) -50 0 50 output voltage, v out (mv) output current, i out (ma) 10 100 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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