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unisonic technologies co., ltd 78RXX linear integrated circuit www.unisonic.com.tw 1 of 12 copyright ? 2011 unisonic technologies co., ltd qw-r102-035.e low dropout voltage regulator ? description as the utc linear integrated ldo, the utc 78RXX shows a high current, high accuracy, and specially low-dropout voltage. the features are: maximum 500mv dr opout 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 whic h their tiny dropout voltage and ground current values are important attributes). ? features * i out =1a ; v out =3.3v,5v,9v,12v (typ) * with adj version * internal overcurrent protection, internal thermal shutdown * internal overvoltage protection, internal short-circuit protection * output disable function 1 to-220b to-220f-4 1 to-252-5 1 ? ordering information ordering number lead free halogen free package packing 78RXXl-tb5-t 78RXXg-tb5-t to-220b tube 78RXXl-tf4-t 78RXXg-tf4-t to-220f-4 tube 78RXXl-tn5-r 78RXXg-tn5-r to-252-5 tape reel note: xx: output voltage, refer to marking information
78RXX linear integrated circuit unisonic technologies co., ltd 2 of 12 www.unisonic.com.tw qw-r102-035.e ? marking information package voltage code marking to-220f-4 33: 05: 09: 12: 3.3v 5.0v 9.0v 12v to-220b/ to-252-5 33: 05: 09: 12: 00: 3.3v 5.0v 9.0v 12v adj ? pin descriptions pin no. pin name pin function 1 v in input voltage pin 2 v out output voltage pin 3 gnd gnd 4 v dis disable signal input pin 5 adj adjustable input pin ( for to-220b/to-252-5 )
78RXX linear integrated circuit unisonic technologies co., ltd 3 of 12 www.unisonic.com.tw qw-r102-035.e ? block diagram fixed output voltage versions thermal shutdown v in v dis high/low - + output on/off 1.4v gnd short-circuit protection soa protection + - bandgap reference overvoltage protection r 1 r 2 q 1 v out 3 4 2 1
78RXX linear integrated circuit unisonic technologies co., ltd 4 of 12 www.unisonic.com.tw qw-r102-035.e ? block diagram adjustable output voltage versions thermal shutdown v in v dis high/low - + output on/off 1.4v gnd short-circuit protection soa protection + - bandgap reference overvoltage protection q 1 v out 3 4 2 1 adj 5
78RXX linear integrated circuit unisonic technologies co., ltd 5 of 12 www.unisonic.com.tw qw-r102-035.e ? absolute maximum ratings (operating temperature range applie s unless otherwise specified. ) parameter symbol ratings units input voltage v in 35 v disable voltage v dis 35 v output current i out 1.0 a to-220b/to-220f-4 1.5 w power dissipation to-252-5 p d 1 w junction temperature t j +150 c operating temperature t opr -40 ~ +85 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 rating unit to-220b/to-220f-4 62.5 c/w junction to ambient to-252-5 ja 110 c/w to-220b/to-220f-4 4 c/w junction to case to-252-5 jc 12 c/w ? electrical characteristics (i out =0.5a, t a = 25 c ,unless otherwise specified) for 78r33 (v in =5v) parameter symbol conditions min typ max units output voltage v out v in = 5v 3.22 3.3 3.38 v dropout voltage v d i out = 1a 0.5 v load regulation v out 5ma < i out < 1a 0.1 2.0 line regulation v out 4v < v in < 10v 0.5 2.5 quiescent current i q i out = 0 a 10 ma ripple rejection rr (note) 45 55 db high v dish output active 2.0 v disable voltage low v disl output disabled 0.8 v high i dish v dis = 2.7v 0.02 ma disable bias current low i disl v dis = 0.4v -0.4 ma for 78r05 (v in =7v) parameter symbol conditions min typ max units output voltage v out v in = 7v 4.88 5 5.12 v dropout voltage v d i out = 1a 0.5 v load regulation v out 5ma < i out < 1a 0.1 2.0 line regulation v out 6v < v in < 12v 0.5 2.5 % quiescent current i q i out = 0 a 10 ma ripple rejection rr (note) 45 55 db high v dish output active 2.0 v disable voltage low v disl output disabled 0.8 v high i dish v dis = 2.7v 0.02 ma disable bias current low i disl v dis = 0.4v -0.4 ma
78RXX linear integrated circuit unisonic technologies co., ltd 6 of 12 www.unisonic.com.tw qw-r102-035.e ? electrical characteristics(cont.) for 78r09 (v in =11v) parameter symbol conditions min typ max units output voltage v out v in = 11v 8.78 9 9.22 v dropout voltage v d i out = 1a 0.5 v load regulation v out 5ma < i out < 1a 0.1 2.0 line regulation v out 10v < v in < 25v 0.5 2.5 quiescent current i q i out = 0 a 10 ma ripple rejection rr (note) 45 55 db high v dish output active 2.0 v disable voltage low v disl output disabled 0.8 v high i dish v dis = 2.7v 0.02 ma disable bias current low i disl v dis = 0.4v -0.4 ma for 78r12 (v in =14v) parameter symbol conditions min typ max units output voltage v out v in =14v 11.71 12 12.29 v dropout voltage v d i out = 1a 0.5 v load regulation v out 5ma < i out < 1a 0.1 2.0 line regulation v out 13 v < v in < 25v 0.5 2.5 quiescent current i q i out = 0 a 10 ma ripple rejection rr (note) 45 55 db high v dish output active 2.0 v disable voltage low v disl output disabled 0.8 v high i dish v dis = 2.7v 0.02 ma disable bias current low i disl v dis = 0.4v -0.4 ma for 78r00-adj parameter symbol conditions min typ max units output voltage v out 1.22 1.25 1.28 v dropout voltage v d i out = 1a 0.5 v load regulation v out 5ma < i out < 1a 0.1 2.0 line regulation v out vo+1v< v in < vo+7v 0.5 2.5 % quiescent current i q i out = 0 a 10 ma ripple rejection rr (note) 45 55 db high v dish output active 2.0 v disable voltage low v disl output disabled 0.8 v high i dish v dis = 2.7v 0.02 ma disable bias current low i disl v dis = 0.4v -0.4 ma note: these guaranteed parameters, ar e not 100% tested in production.
78RXX linear integrated circuit unisonic technologies co., ltd 7 of 12 www.unisonic.com.tw qw-r102-035.e ? typical application circuit fixed output voltage versions + * c i is required if regulator is located an ap preciable distance from power supply filter. [ c i > 0.33 f ( electrolytic ) ] * co improves stability and transient response. [ c o > 47 f( electrolytic ) ] adjustable output voltage version + * c i is required if regulator is located an ap preciable distance from power supply filter. [ c i > 0.33 f ( electrolytic ) ] * co improves stability and transient response . [ c o > 47 f( electrolytic ) ]
78RXX linear integrated circuit unisonic technologies co., ltd 8 of 12 www.unisonic.com.tw qw-r102-035.e ? typical characteristics (1) 78r33 output voltage, v out (v) quiescent current, i q (ma) output voltage, v out (v) relative output voltage, ( ) output voltage, v out (v) quescent current, i q (ma)
78RXX linear integrated circuit unisonic technologies co., ltd 9 of 12 www.unisonic.com.tw qw-r102-035.e ? typical characteristics(cont.) output peak current, i op (a) (2) 78r05 r l = r l =5 ? 7 6 5 4 3 2 1 0 0 5 15 10 input voltage, v in (v) output voltage, v out (v) output voltage vs input voltage 0 0 5 10 15 20 25 input voltage, v in (v) quiescent current, i q (ma) quiescent current vs input voltage r l = 5 10 15 20 25 30 output voltage, v out (v) relative output voltage, ( )
78RXX linear integrated circuit unisonic technologies co., ltd 10 of 12 www.unisonic.com.tw qw-r102-035.e ? typical characteristics(cont.) 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 -25 025 75 junction temperature,t j ( ) output voltage, v out (v) output voltage vs temperature 0 quescent current, i q (ma) quescent current vs temperature 2 4 6 8 10 50 100 125 -25 025 75 50 100 125 junction temperature,t j ( ) output peak current, i op (a) (3) 78r09 output voltage, v out (v) quiescent current, i q (ma)
78RXX linear integrated circuit unisonic technologies co., ltd 11 of 12 www.unisonic.com.tw qw-r102-035.e ? typical characteristics(cont.) 0 0.5 1 2 disable voltage, v dis (v) output voltage, v out (v) output voltage vs disable voltage 0 relative output voltage, (%) overcurrent protection characteristics 20 40 60 80 100 1.5 2.5 3 0 0.5 1.0 2.0 output current, i out (a) 1.5 2.5 3.0 9 8 7 6 5 3 1 4 2 0 10 9.06 9.04 9.02 9.00 8.98 8.96 8.94 8.92 -25 0 25 75 junction temperature, t j ( ) output voltage, v out (v) output voltage vs temperature 0 quescent current, i q (ma) quescent current vs temperature 2 4 6 8 10 50 100 125 -25 025 75 50 100 125 junction temperature, t j ( ) output peak current, i o(peak) (a)
78RXX linear integrated circuit unisonic technologies co., ltd 12 of 12 www.unisonic.com.tw qw-r102-035.e 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 wr itten 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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