shantou huashan electronic devices co.,ltd . h 7918 ? 3-terminal 1a nega tive v o l t age regula t o rs th e h 7 9 18 s e r i e s o f t h r e e t e r m i n a l n e g a t i v e re gu la to rs ar e a v a i l a b le in th e t o - 2 20 pa ck ag e a nd wi th s e v e r a l f ixe d ou tp ut vol ta ge s, m aki ng t h e m u sef ul i n a wi de r a n ge of ap pl ic at io ns. e a c h t y p e e m p l o ys i n t e r n a l cur re nt l i m iti ng , th er mal s h u t do wn a n d s a f e ar ea p r o t e c t i o n , m aki ng i t es se nt ia ll y indestructible. ? featur es 1 d gnd 2 d input 3 d output t o -220 o u tput current in excess of 1a o u tput v o ltages of -18v lntem a l therm a l overload protection short circuit protection o u tput t r ansistor safe-a rea com p ensation ? absolute maximum ratings ? t a =25 ??? v i ?a?a input v o ltage ?- ?-?-?- ?-?- ?-?-?- ?-?- ?-?- -35 v r | jc ?a?a ther m a l resistance ju nc tio n-ca ses ?-?-?-?- 5 ?? / w r | ja ?a?a therm a l resistance junction-air ?-?-?-?- 65 ?? / w t opr ?a?a o p erating t e m p erature range ?-?-?-?- ?- 0~125 ?? t stg ?a?a s t orage t e m p erature r a nge ?- ?-?-?-?- -65~150 ?? 1
shantou huashan electronic devices co.,ltd. h 7918 ? unless otherwise specified ? 0 ??? t j ? 125 ?? ,i o =500ma,v i =27v,c i =2.2 | f,c o =1 | f ? s y m b o l p a r a m e t e r m i n . typ. m a x . u n i t c o n d i t i o n s -17.3 - 1 8 - 1 8 . 7 t j =25 ?? v o output v o ltage -17.1 - 1 8 - 1 8 . 9 v i o = 5 . o m a to 1. 0a , p o ? 15w , v i =-22.5v to -33v 1 5 3 6 0 t j =25 ?? ,v i =-21v to -33v | v o line regulation (note1) 8 1 8 0 mv t j =25 ?? ,v i =-24v to -30v 1 5 3 6 0 t j =25 ?? ,i o =5.0ma to 1.5a | v o load regulation (note1) 5 1 8 0 mv t j =25 ?? ,i o =250ma to 750ma i q quiescent c u r r e n t 3 6 m a t j =25 ?? 0 . 5 i o =5ma to 1.0a | i q qu ie sc en t c u r r e n t ch an ge 1 . 0 ma ? v i =-22v to -33v | v o / | t output voltage drift -1 mv/ ?? i o =5ma v n output noise voltage 300 | v t a =25 ?? ,f=10hz to 100khz r r r i p p l e r e j e c t i o n 5 4 6 0 d b f=120hz, ? v i =10v v d d r o p o u t v o l t a g e 2 v t j =25 ?? ,i o =1a i sc short circuit current 300 ma t j =25 ?? ,v i =-35v i pk p e a k c u r r e n t 2 . 2 a t j =25 ?? 2
shantou huashan electronic devices co.,ltd. h 7918 3
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