unisonic technologies co., ltd LR1012 preliminary cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2011 unisonic technologies co., ltd qw-r502-495.b high operating voltage cmos voltage regulator ? description the utc LR1012 series is high operating voltage regulator using utc cmos technology. the max operating voltage of utc LR1012l is 16v so it works best in high-voltage applications. moreover, it is also suitable in constructing lowpower portable devices including small current consumption, power-off function and short-current protection. ? features * operating current: max. 1.8a (3.0v) * output voltage: 2.0 ~ 6.0v ,as 0.1v step * 2.0% output voltage accuracy * output current: 50ma capable @3.0v output, v in =5v 75ma capable @5.0v output, v in =7v * dropout voltage:120mv @v out = 5.0v, i out =10ma sot-25 4 5 3 2 1 ? ordering information ordering number package packing lead free halogen free LR1012l-xx-af5-r LR1012g-xx-af5-r sot-25 tape reel note: xx: output voltage, refer to marki ng information.
LR1012 preliminary cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-495.b ? pin configuration package voltage code marking sot-25 18:1.8v ? pin description pin no. pin name function 1 v ss gnd 2 v in input voltage 3 v out output voltage 4 n.c. n.c. pin is electrically op en. n.c. pin can be connected to v in or v ss . 5 on/off on/off select ? block diagram
LR1012 preliminary cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-495.b ? absolute maximum rating (t a =25 , unless otherwise specified) parameter symbol ratings unit input voltage v in 18 v v on/off v ss -0.3 ~ 18 v output voltage v out v ss -0.3 ~ v in +0.3 v power dissipation p d 250 mw operating temperature t opr -40~+85 storage temperature range t stg -40~+125 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 (t a =25 , unless otherwise specified) parameter symbol test conditions min typ max unit output voltage (note 1) v out (e) v in =v out (s)+2v, i out =10ma v out (s) 0.98 v out (s) v out (s) 1.02 v output current (note 2) i out v out (s)+2 v in 16v 2.0v v out (s) 2.9v 30 ma 3.0v v out (s) 3.9v 50 ma 4.0v v out (s) 4.9v 65 ma 5.0v v out (s) 5.9v 75 ma dropout voltage (note 3) vdrop i out =10ma 2.0v v out (s) 2.4v 0.46 0.95 v 2.5v v out (s) 2.9v 0.32 0.68 v 3.0v v out (s) 3.4v 0.23 0.41 v 3.5v v out (s) 3.9v 0.19 0.35 v 4.0v v out (s) 4.4v 0.16 0.30 v 4.5v v out (s) 4.9v 0.14 0.27 v 5.0v v out (s) 5.4v 0.12 0.25 v 5.5v v out (s) 6.0v 0.11 0.23 v line regulation 1 v out 1 v out (s)+1v v in 16v, i out =1ma 5 30 mv line regulation 2 v out 2 v out (s)+1v v in 16v, i out =1a 5 40 mv load regulation v out 3 v in =v out (s)+2v 2.0v v out (s) 2.9v, 1a i out 20ma 6 30 mv 3.0v v out (s) 3.9v, 1a i ou t 30ma 10 45 mv 4.0v v out (s) 4.9v, 1a i out 40ma 13 65 mv 5.0v v out (s) 5.9v, 1a i out 50ma 17 80 mv output voltage temperature coefficient (note 4) v out t a v out v in = v out (s) + 1 v, i out = 10ma -40 t a 85 100 ppm / current consumption i ss v in =v out (s)+2v no load 2.0v v out (s) 2.7v 0.9 1.6 a 2.8v v out (s) 3.7v 1.0 1.8 a 3.8v v out (s) 5.1v 1.2 2.1 a 5.2v v out (s) 6.0v 1.5 2.5 a
LR1012 preliminary cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-495.b ? electrical characteristics(cont.) parameter symbol test conditions min typ max unit input voltage v in 16 v current consumption at poweroff i ss 2 v in =v out (s)+2v, v on/off =0v, no load 0.1 0.5 a on/off pin input voltage for high level v sh v in =v out (s)+2v, r=1k ? judged by v out output level 2.0 v on/off pin input voltage for low level v sl v in =v out (s)+2v, r l =1k ? judged by v out output level 0.4 v on/off pin input current at high level i sh v in =v out (s)+2v, v on/off =7v 0.1 a on/off pin input current at low level i sl v in =v out (s)+2v, v on/off =0v -0.1 a short-circuit current i os v in =v out (s)+2v, v out pin=0 v 40 ma notes: 1. v out (s)=specified output voltage v out (e)=effective output voltage, i.e ., the output voltage when fixing i out (=10 ma) and inputting v out (s)+2.0v. 2. output current at which out put voltage becomes 95% of v out (e) after gradually increasing output current. 3. vdrop=v in1 -(v out (e)0.98), where v in1 is the input voltage at which output voltage becomes 98% of v out (e) after gradually decreasing input voltage. 4. temperature change ratio for t he output voltage [mv/c] is calcul ated using the following equation. 1000 ? = ] / ppm [ v t v ] v )[ s ( v ] / mv [ t v out a out out a out
LR1012 preliminary cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-495.b ? terms c l (output capacitors) cause the utc LR1012l series can provide stable operation without c l .so the c l are used only to improve transient response characteristics.and when c l is used, a low esr (equivalent series resistance) capacitor like ceramic capacitor can also be used. c l can hence be removed in applications when transient response can be negligible. v out (output voltage) unless the under conditions change, the accuracy of t he output voltage is 2.0% guaranteed under the specified conditions for input voltage, which differs depending upon the product items, output current, and temperature. v out1 , v ou t2 (line regulations 1 and 2) after a change in the input voltage with the output curre nt remained unchanged, these values show how much the output voltage changes. v out 3 (load regulation) after a change in the output current with the input vo ltage remained unchanged, these values show how much the output voltage changes. dropout voltage (vdrop) when output voltage falls to 98% of v out (e) by gradually decreasing the input voltage (v in), this value shows the difference between the input voltage (v in 1) and the output voltage. vdrop=v in 1-[v out (e)0.98] ? application circuit v in r1 c in gnd v in on/off v ss v out v out tr1 utc LR1012l c l output current boost circuit c in gnd r l load v in v in utc LR1012l v ss on/off v out v out i o constant current circuit
LR1012 preliminary cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-495.b ? application circuit(cont.) v in r1 c in gnd v in on/off v ss v out v out tr1 utc LR1012l constant current boost circuit load i o v out r l 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.
|
