unisonic technologies co., lm79xx linear integrated circuit www.unisonic.com.tw 7 of 7 copyright ? 2008 unisonic technologies co., qw-r101-007.f 3 terminal 1a negative voltage regulator ? description the utc lm79xx series of three-terminal negative regulators is available several fixed output volt age, making them useful in a wide range of application. each type employ s internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. ? features * output current up to 1a * -5v, -6v, -8v, -9v,-12v, -15v, -18v, -24v output voltage available * thermal overload protection * short circuit protection ? ordering information ordering number pin assignment normal lead free halogen free package 1 2 3 packing lm79xx-ta3-t lm79xxl-ta3-t lm79xxg-ta3-t to-220 g i o tube lm79xx-tf3-t lm79xxl-tf3-t lm79xxg-tf3-t to-220f g i o tube note: o: output g: gnd i: input ? marking information package voltage code marking to-220 to-220f 05: - 5.0v 06:-6.0v 08:-8.0v 09:-9.0v 12:-12v 15:-15v 18:-18v 24:-24v 123 utc lm79 voltage code date code l: lead free g: halogen fre e lot code
lm79xx linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r101-007.f ? block diagram voltage reference protection circuitry gnd output input rsc r 2 r 1
lm79xx linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r101-007.f ? absolute maximum ratings (t a =25 c) parameter symbol rating unit input voltage v in -35 v output current i out 1 a power dissipation p d internally limited w operating temperature t opr 0 ~ +125 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 rating unit junction to ambient ja 65 c /w junction to case jc 5 c /w ? electrical characteristics (i out =0.5a, t j =0 c~125 c, c i =2.2uf, c o =1uf, unless otherwise specified) for utc lm7905 (v in =-10v) parameter symbol test conditions min typ max unit t j =25 c -4.80 -5.0 -5.20 v output voltage v out v in =-7v~-20v i out =5ma~1a, p d 15w Q -4.75 -5.25 v dropout voltage v d i out =1a t j =25 c 2 v v in =-7v~-25v t j =25 c 10 100 mv line regulation v out v in =-8v~-12v t j =25 c mv i out =5ma~1a t j =25 c 10 100 mv load regulation v out i out =250ma~750ma t j =25 c 3 50 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-7v~-25v 0.1 1.3 ma output noise voltage en f=10hz~100khz t a =25 c 100 v output voltage drift v out / ti out =5ma -0.4 mv/ c ripple rejection rr v in =-8v~-18v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma for utc lm7906 (v in =-11v) parameter symbol test conditions min typ max unit t j =25 c -5.76 -6.00 -6.24 v output voltage v out v in =-8v~-21v, i out =5ma~1a, p d 15w Q -5.70 -6.30 v dropout voltage v d i out =1.0a t j =25 c 2 v v in =-8v~-25v t j =25 c 10 120 mv line regulation v out v in =-9v~-13v t j =25 c 5 60 mv i out =5ma~1a t j =25 c 10 120 mv load regulation v out i out =250ma~750ma t j =25 c 3 60 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-8v~-25v 0.1 1.3 ma output noise voltage en f=10hz~100khz t a =25 c 130 v
lm79xx linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r101-007.f ? electrical characteristics(cont.) parameter symbol test conditions min typ max unit output voltage drift v out / ti out =5ma -0.5 mv/ c ripple rejection rr v in =-9v~-19v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma for utc lm7908 (v in =-14v) parameter symbol test conditions min typ max unit t j =25 c -7.68 -8.0 -8.32 v output voltage v out v in =-10.5v~-23v, i out =5ma~1a, p d 15w Q -7.60 -8.40 v dropout voltage v d i out =1a t j =25 c 2 v v in =-10.5v~-25v t j =25 c 10 160 mv line regulation v out v in =-11.5v~-17v t j =25 c 5 80 mv i out =5ma~1a t j =25 c 12 160 mv load regulation v out i out =250ma~750ma t j =25 c 4 80 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-11.5v~-25v 0.1 1.0 ma output noise voltage en f=10hz~100khz t a =25 c 175 v output voltage drift v out / ti out =5ma -0.6 mv/ c ripple rejection rr v in =-11.5v~-21.5v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma for utc lm7909 (v in =-15v) parameter symbol test conditions min typ max unit t j =25 c -8.64 -9.0 -9.36 v output voltage v out v in =-11.5v~-23v, i out =5ma~1a, p d 15w Q -8.55 -9.45 v dropout voltage v d i out =1a t j =25 c 2.0 v v in =-11.5v~-26v t j =25 c 10 180 mv line regulation v out v in =-12v~-18v t j =25 c 5 90 mv i out =5ma~1a t j =25 c 12 180 mv load regulation v out i out =250ma~750ma t j =25 c 4 90 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-11.5v~-26v 0.1 1.0 ma output noise voltage en f=10hz~100khz t a =25 c 175 v output voltage drift v out / ti out =5ma -0.6 mv/ c ripple rejection rr v in =-12.5v~-22.5v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma
lm79xx linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r101-007.f ? electrical characteristics(cont.) for utc lm7912 (v in =-18v) parameter symbol test conditions min typ max unit t j =25 c -11.52 -12.0 -12.48 v output voltage v out v in =-14.5v~-27v, i out =5ma~1a, p d 15w Q -11.40 -12.60 v dropout voltage v d i out =1a t j =25 c 2 v v in =-14.5v~-30v t j =25 c 12 240 mv line regulation v out v in =-16v~-22v t j =25 c 6 120 mv i out =5ma~1a t j =25 c 12 240 mv load regulation v out i out =250ma~750ma t j =25 c 4 120 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-14.5v~-30v 0.1 1.0 ma output noise voltage en f=10hz~100khz t a =25 c 200 v output voltage drift v out / t i out =5ma -0.8 mv/ c ripple rejection rr v in =-15v~-25v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma for utc lm7915 (v in =-23v) parameter symbol test conditions min typ max unit t j =25 c -14.40 -15.0 -15.60 v output voltage v out v in =-17.5v~-30v i out =5ma~1a, p d 15w Q -14.25 -15.75 v dropout voltage v d i out =1a t j =25 c 2 v v in =-17.5v~-30v t j =25 c 12 300 mv line regulation v out v in =-20v~-26v t j =25 c 6 150 mv i out =5ma~1a t j =25 c 12 300 mv load regulation v out i out =250ma~750ma t j =25 c 4 150 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-17.5v~-30.5v 0.1 1.0 ma output noise voltage en f=10hz~100khz t a =25 c 250 v output voltage drift v out / t i out =5ma -0.9 mv/ c ripple rejection rr v in =-18.5v~-28.5v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma
lm79xx linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r101-007.f ? electrical characteristics(cont.) for utc lm7918 (v in =-27v) parameter symbol test conditions min typ max unit t j =25 c -17.28 -18.0 -18.72 v output voltage v out v in =-21v~-33v i out =5ma~1a, p d 15w Q -17.10 -18.90 v dropout voltage v d i out =1a t j =25 c 2 v v in =-21v~-33v t j =25 c 15 360 mv line regulation v out v in =-24v~-30v t j =25 c 8 180 mv i out =5ma~1a t j =25 c 15 360 mv load regulation v out i out =250ma~750ma t j =25 c 5.0 180 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-21v~-32v 0.1 1.0 ma output noise voltage en f=10hz~100khz t a =25 c 300 v output voltage drift v out / t i out =5ma -1 mv/ c ripple rejection rr v in =-22v~-32v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma for utc lm7924 (v in =-33v) parameter symbol test conditions min typ max unit t j =25 c -23.04 -24 -24.96 v output voltage v out v in =-27v~-38v i out =5ma~1a, p d 15w Q -22.80 -25.20 v dropout voltage v d i out =1.0a t j =25 c 2 v v in =-27v~-38v t j =25 c 15 480 mv line regulation v out v in =-30v~-36v t j =25 c 8 240 mv i out =5ma~1a t j =25 c 15 480 mv load regulation v out i out =250ma~750ma t j =25 c 5.0 240 mv quiescent current i q t j =25 c 3 6 ma i out =5ma~1a 0.05 0.5 ma quiescent current change i q v in =-27v~-38v 0.1 1.0 ma output noise voltage en f=10hz~100khz t a =25 c 400 v output voltage drift v out / t i out =5ma -1 mv/ c ripple rejection rr v in =-28v~-38v, f=120hz 54 60 db peak current i peak t j =25 c 2.2 a short circuit current i sc v in =-35v t a =25 c 300 ma
lm79xx linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r101-007.f ? application circuits fig.1 fixed output regulator utc lm7915 1 23 utc lm7815 1 2 3 2.2 f 1 f 0.1 f 0.33 f +20v +15v -15v -20v 1n4001 1n4001 fig.2 split power supply(+-15v,1a) utc lm79xx 1 23 c i 2.2 f c 3 2.5 f c o 1 f -v out -v in r 1 r 2 fig.3 circuit for incr easing output voltage 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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