unisonic technologies co., ltd l1186 cmos ic www.unisonic.com.tw 1 of 7 copyright ? 2011 unisonic technologies co., ltd qw-r502-319.f 600ma cmos ldo ? description the utc l1186 is a coms positive linear regulator. one of its features is the very low quiesc ent current typical as low as 30 a and its dropout voltage is extremely low with 600ma output current. the internal circuit includes thermal shutdown and current fold-back to prevent device failure when the circuit is operated in the bad conditions. in application, the utc l1186 needs a low noise, regulated supply. for stable operation, the output capacitance value should be 2.2 f or more. the utc l1186 is an ideal for battery applications, such as instrumentations, portable electron ics, wireless devices, cordless phones, pc peripherals, and battery powered widgets. ? features * accurate to within 1.5% * quiescent current: 30 a * internal over-temperature shutdown * with current limiting * internal short circuit current fold-back * with noise reduction bypass capacitor * has power-saving shutdown mode * very low temperature coefficient sot-25 1 3 5 2 4 sop-8 1 ? ordering information ordering number package packing lead free halogen free l1186l-xx-af5-r l1186g-xx-af5-r sot-25 tape reel l1186l-xx-s08-a-r l1186g-xx-s08-a-r sop-8 tape reel L1186L-XX-S08-A-T l1186g-xx-s08-a-t sop-8 tube l1186l-xx-s08-b-r l1186g-xx-s08-b-r sop-8 tape reel l1186l-xx-s08-b-t l1186g-xx-s08-b-t sop-8 tube note: xx: output voltage, re fer to marking information.
l1186 cmos ic unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r502-319.f ? marking information package voltage code marking sot-25 15 :1.5v 28 :2.8v ad:adj 3 2 1 5 4 voltage code l: lead free g: halogen free lsxx sop-8 ? pin configuration 3 2 1 4 5 en gnd v in v out byp/adj sot-25 sop-8(a) sop-8(b) ? pin description pin no pin name description sot-25 sop-8(a) sop-8(b) 1 1 8 v in input for voltage input. 2 2,3,6,7 3 gnd ground. 3 4 5 en enable pin. 4 5 2 byp/adj noise reduction bypa ss capacitor/ adjusted voltage 5 8 1 v out output voltage pin 4,6,7 nc no connection
l1186 cmos ic unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r502-319.f ? block diagram
l1186 cmos ic unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r502-319.f ? absolute maximum rating (t a = 25c, unless otherwise specified.) parameter symbol ratings unit input voltage v in 8 v output voltage v out gnd-0.3 ~ v in +0.3 v output current i out out in d v - v p a power dissipation sot-25 p d 400 mw sop-8 600 junction temperature t j 150 c operating temperature t opr -40~+85 c storage temperature t stg -65~+150 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 operation is not implied. ? thermal data parameter symbol ratings unit junction to ambient sot-25 ja 260 c/w sop-8 200 junction to case (note) sot-25 jc 81 c/w sop-8 65 note: jc on center of molding compound if ic has on tab ? electrical characteristics (t a = 25c, unless otherwise specified.) fixed voltage parameter symbol test conditions min typ max unit input voltage v in note1 7 v output voltage accuracy v out i out =1ma -1.5 1.5 % line regulation out out v v i out =1ma v in =v out +1~v out +2 1.4v < v out 2.0v -0.15 0.15 % 2.0v < v out < 4.0v -0.1 0.02 0.1 % load regulation out out v v i out =1ma~600 ma 0.2 1 % output current i out v out > 1.2v 600 ma current limit i limit v out > 1.2v 600 800 ma short circuit current i sc v out < 0.8v 300 600 ma quiescent current i q i out =0ma 30 50 a ground pin current i gnd i out =1ma~600ma 35 a dropout voltage v d i out =600ma v out =v o ( nom ) -2.0% 1.4v < v o ( nom ) 2.0v 1400 mv 2.0v < v o ( nom ) 2.8v 800 mv over temperature shutdown ots 150 c over temperature hysteresis oth 30 c temperature coefficient of output voltage t c v o 30 ppm/c power supply rejection psrr i out =100ma c out =2.2 f ceramic c byp =0.01 f f=1khz 75 db f=10khz 55 db f=100khz 30 db output voltage noise en f=10hz~100khz, i out =10ma c out =2.2 f , c byp =0.1 f 30 vrms en input threshold v eh v in =2.7v~7v 2.0 v in v v el v in =2.7v~7v 0 0.4 v en input bias current i eh v en =v in , v in =2.7v~7v 0.1 a i el v en =0v, v in =2.7v~7v 0.5 a shutdown supply current i sd v in =5v, v out =0v, v en < v el 0.5 1 a pg leakage current i lc v pg =7v 1 a
l1186 cmos ic unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r502-319.f ? electrical characteristics (cont.) adjusted voltage parameter symbol test conditions min typ max unit input voltage v in note1 7 v reference voltage v ref 1.196 1.215 1.234 v output voltage accuracy v out i out =1ma -1.5 1.5 % line regulation out out v v v in =v out +v d ~7v, i out =1ma -0.15 0.15 % load regulation out out v v i out =1ma v in =v out +1~v out +2 1.4v < v out 2.0v -0.15 0.15 % 2.0v < v out < 4.0v -0.1 0.02 0.1 output current i out v out > 1.3v 600 ma current limit i limit v out > 1.3v 600 800 ma short circuit current i sc v out < 0.8v 300 600 ma adjusted current i adj i out =0ma 30 50 a ground pin current i gnd i out =1ma~600ma 35 a dropout voltage v d v out =v o ( nom ) -2.0%, i out =600ma 600 mv over temperature shutdown ots 150 c over temperature hysteresis oth 30 c temperature coefficient of output voltage t c v o 30 ppm/c power supply rejection psrr i out =100ma c out =2.2 f ceramic c byp =0.01 f f=1khz 40 db f=10khz 20 db f=100khz 15 db output voltage noise en f=10hz~100khz, i out =10ma c out =2.2 f , c byp =0.1 f 30 vrms en input threshold v eh v in =2.7v~7v 2.0 v in v v el v in =2.7v~7v 0 0.4 v en input bias current i eh v en =v in , v in =2.7v~7v 0.1 a i el v en =0v, v in =2.7v~7v 0.5 a shutdown supply current i sd v in =5v, v out =0v, v en < v el 0.5 1 a pg leakage current i lc v pg =7v 1 a notes: 1. v in ( min ) =v out +v d 2. to prevent the short circuit cu rrent protection feature fr om being prematurely activated, the input voltage must be applied before a current source load is applied.
l1186 cmos ic unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r502-319.f ? typical application circuit fixed voltage l1186 input c1 gnd v in v out output c3 2.2 f + c2 byp en 5v 1 f0.1 f adjusted voltage in gnd adj out in r2 r1 out c3 2.2f c2 100p c1 1f + en v out = 1.215 ( r1/r2 +1 ) c2 is unnecessary if r1 or r2 < 20 k r 1 and r 2 use resistance value within 1% accuracy for correct for correct v out en
l1186 cmos ic unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r502-319.f ? typical characteristics v in (2v/div) v out (10mv/div) i o (500ma/div) 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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