3-terminal regulators output current up to 100 ma no external components required internal thermal-overload protection internal short-circuit current limiting provided pb-free packages from the end of 2004 description this series of fixed negative-voltage integrated-circuit voltage regulators is designed for a wide range of applications. these include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. in addition, they can be used to control series pass elements to make high-current voltage-regulator circuits. one of these regulators can deliver up to 100 ma of output current. the internal current-limiting and thermal-shutdown features make them essentially immune to overload. when used as a replacement for a zener-diode and resistor combination, these devices can provide e f current. to92 electrical characteristics at specified virtual junction temperature, v i = otherwise noted) parameter test conditions t j 3 unit j min typ max v 7vto20v i 1 ma to 40 ma 25 c output voltage v 7 v t 20 v i 1 a t 40 a full range v input v i = 25 c mv voltage regulation v i = 25 c mv ripple rejection v i = f = 120 hz 25 c db output i o = 1 ma to 25 c mv voltage regulation i o = 1 ma to 25 c mv output noise voltage f = 10 hz to 100 khz 25 c m v dropout voltage 25 c 1.7 v bias current 25 c 6 ma bias c rrent 125 c 5.5 ma bias v i = full range 1.5 ma current change i o = 1 ma to 40 ma f ll range 0.1 ma 3 pulse-testing techniques maintain t j as close to t a as possible. thermal effects must be taken into account separately. all characteristics are measure d with a 0.33- m f capacitor across the input and a 0.1- m f capacitor across the output. full range for the 7 j = 0 c to 70 c wing shing computer components co., (h.k.)ltd. tel:(852)2341 9276 fax:(852)2797 8153 hom e p a g e : h t tp :/ / w w w . w in g s h in g . c o m e - m a i l: ic@wingshing.com
equivalent schematic output input common absolute maximum ratings over operating free-air temperature range (unless otherwise noted) 2 input voltage : 79l0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating free-ai r , case, or virtual junction temperature ? ???? ????????? ??M ? ???M ????? ??? ???? ??? ? ??????? ?M ? ??????? ????????? ????? ? ??? M ? ?? ?? ? ?????????? ???????? ?????????? ??? ?? ???? ?? ???? ??????? ? ? ? ??? ?????? ? ? ? ??????? ?????? ??????? ????????? ? ? ?
3 output 115 950 2 input 115 690 1 ground 1150 115 pad n pad name x( m) y( m) pad location ws79l00 chip size 1.15 x 1.35mm pad location coordinates 90 m 90 m 3 2 1
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