unisonic technologies co., ltd r1mx55 linear integrated circuit www.unisonic.com.tw 1 of 9 copyright ? 2012 unisonic technologies co., ltd qw-r101-023.d voltage regulator ? description as the utc linear intergrated ldo, the r1mx55 shows a high current, high accuracy, low-dropout voltage. the feature are: low dropout voltage, very low ground current. cause the series have been designed for high current loads, so they are also used in lower current, extremely low dropout-critical systems (in which their tiny dropout volt age and ground current values are important attributes). the r1mx55 is stable with ceramic capacitors. it requires a 1 f or greater capacitor for stability. ? features * built-in on/off function, * over current protection function, * over heat protection function * adjustable dc output voltage ? ordering information ordering number package packing lead free halogen free r1mx55l-ab5-r r1mx55g-ab5-r sot-89-5 tape reel r1mx55l-sh2-r R1MX55G-SH2-R hsop-8 tape reel r1mx55l-sh2-t r1mx55g-sh2-t hsop-8 tube (1) r: tape reel, t: tube (2) ab5: sot-89-5, sh2: hsop-8 (3) g: halogen free, l: lead free r1mx55l-ab5-r (1)packing type (2)package type (3)lead free
r1mx55 linear integrated circuit unisonic technologies co., ltd 2 of 9 www.unisonic.com.tw qw-r101-023.d ? pin configuration for hsop-8 ? pin descriptions for sot89-5 package pin no. pin name function 1 v adj output voltage adjustment 2 gnd ground 3 v c on/off control 4 v in dc input 5 v out dc output for hsop-8 package pin no pin name description 1 v out dc output 2, 3, 6 nc no connection 4 nc/adj output voltage adjustment 5 en enable pin, logic low=shutdown; logic high= enable 7 gnd ground 8 v in dc input
r1mx55 linear integrated circuit unisonic technologies co., ltd 3 of 9 www.unisonic.com.tw qw-r101-023.d ? block diagram v out v adj gnd v c v in 4 1 2 3 5 on/off vref otp ocp block for adjustable version for sot-89-5 v out v adj gnd v c v in 4 1 2 3 5 on/off vref otp ocp block for fixed version
r1mx55 linear integrated circuit unisonic technologies co., ltd 4 of 9 www.unisonic.com.tw qw-r101-023.d ? absolute maximum ratings parameter symbol ratings units for sot-89-5 input voltage (note 2) v in 9 v on/off control voltage (note 2) v c 9 v output adiustment pin voltage (note 2) v adj 5 v output current i out 500 ma power dissipation p d 900 mw junction temperature t j 150 c operating temperature t opr -40 ~ +85 c storage temperature t stg -55 ~ +150 c for hsop-8 input voltage v in 15 v enable voltage v c 15 v power dissipation p d 1100 mw junction temperature t j +125 c storage temperature t stg -55 ~ +150 c note: 1. 2. 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. all are open except gnd and applicable terminals. ? electrical characteristics (t a =25c, unless otherwise specified) for sot-89-5 (v in =3.5v, v out =2.44v (r 1 =r 2 =100k ? ), i out =30ma, v c =1.8v) parameter symbol conditions min typ max units input voltage v in 2.6 9.0 v output voltage v out 1.3 5.0 v load regulation v out i out =5~500ma 10 100 mv line regulation v out v in =3.5~8.5v 6 20 mv ripple rejection rr 55 db dropout voltage v d i out =500ma 0.7 v reference voltage v ref 1.196 1.22 1.244 v temperature coefficient of output voltage t c v out t j =25 ~ 75c, i out =10ma 0.1 mv/c output noise voltage v no(rms) 10h z < f < 100kh z 100 v on-state voltage for control v c(on) (note) 1.8 v on-state current for control i c(on) v c =1.8v 20 70 a off-state voltage for control v c(off) 0.4 v quiescent current i q i out =0a 0.8 1.2 ma output off-state consumption current i qs v c =0.2v 1 a note: in case that the control termi nal (3th pin) is non-connection, out put voltage should be off state.
r1mx55 linear integrated circuit unisonic technologies co., ltd 5 of 9 www.unisonic.com.tw qw-r101-023.d ? electrical characteristics(cont.) for hsop-8 (v in = v o +2.5v, v out =1.8v, v en = v in , t a =25c, unless otherwise specified) parameter symbol conditions min typ max unit input voltage v in 2.6 15 v output voltage accuracy v out -2 +2 % quiescent current i q i out =0.1ma 0.85 ma i out =50ma 1.26 i out =100ma 1.67 i out =150ma 2.05 5 reference voltage v ref -2% 1.2 +2% v line regulation reg line v out +2.5v r1mx55 linear integrated circuit unisonic technologies co., ltd 6 of 9 www.unisonic.com.tw qw-r101-023.d ? typical application circuit 1 3 5 3 r 2 r 1 c o 1 f v out load c i 1 f v in dc input on-off single high:output on low or open:output off 2 4 5 1 r1mx55
r1mx55 linear integrated circuit unisonic technologies co., ltd 7 of 9 www.unisonic.com.tw qw-r101-023.d ? electrical characteristics measuring circuit(for sot-89-5)
r1mx55 linear integrated circuit unisonic technologies co., ltd 8 of 9 www.unisonic.com.tw qw-r101-023.d ? typical characteristics(for sot-89-5) output current, i out (ma) 50 100 150 200 250 300 350 400 0 0.05 0.10 0.15 0.20 0.25 dropout voltage vs. output current (typical values) 10 -20 85 105 125 0 -30 junction temperature, t j (c) -10 20 25 30 40 45 50 65 output voltage deviation vs. junction temperature (typical values) 450 500 550 -40 -50 t a =25 , v c =1.8, v in =input voltage when output voltage falls 0.1v from that at v in =v out(typ) +1.0v, c i =c o =1u (ceramic capacitor) v in =4.3v, v c =1.8v, i out =30ma, c i =c o =1u (ceramic capacitor) -15 5 -25 time(s) load transient response 0 -50 50 100 -100 50 500 0 100 200 300 400 500 600 700 800 900 1000 time(s) line transient response 0 -200 100 200 -100 0 1 0 100 200 300 400 500 600 700 800 900 1000 t a =25 ,v c =1.8v, c i =c o =1u (ceramic capacitor) t a =25 ,v in =5v, v c =1.8v, i ol =50ma, c i =c o =1u (ceramic capacitor)
r1mx55 linear integrated circuit unisonic technologies co., ltd 9 of 9 www.unisonic.com.tw qw-r101-023.d ? typical characteristics(cont.) 690 670 660 junction temperature, t j (c) 680 700 710 720 730 quiescent current vs. junction temperature (typical values) 650 640 85 105 125 25 45 65 -15 5 -25 v in =4.3v, v c =1.8v, i out =0a, c i =c o =1u (ceramic capacitor) 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 writ ten 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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