parameter parameter parameter parameter symbol symbol symbol symbol typ typ typ typ unit unit unit unit input voltage v i -35 v output voltage v o -9.0 v peak current i pk -2.2 a operating temperature range t opr 0~125 o c storage temperature range t stg -65~150 o c LM7909 LM7909 LM7909 LM7909 general general general general description description description description parameter parameter parameter parameter symbol symbol symbol symbol test test test test conditions conditions conditions conditions min min min min typ typ typ typ max max max max unit unit unit unit output voltage v o v i = -12v to -23v,p o 15w -8.6 -9.0 -9.4 v line regulation (note1) regline v i = -12v to -25v -10 -180 mv v i = -13v to -18v -5 -90 load regulation (note1) regload i o = -5.0ma to-1.5a -12 -180 mv i o =-250ma to -750ma -4 -90 quiescent current i q t j =+25 o c -3 -6 ma quiescent current change i q i o = -5ma to -1a -0.5 ma v i = -12v to -25v -1.0 ripple rejection rr f = 120hz, v i = 10v 54 60 db dropout voltage v drop i o = -1a, t j =+25 o c -2 v short circuit current i sc v i = -35v, t a =+25 o c -300 ma peak current i pk t j =+25 o c -2.2 a 3-terminal 3-terminal 3-terminal 3-terminal positive positive positive positive voltage voltage voltage voltage regulator regulator regulator regulator the LM7909 series of three terminal positive regulators are available in the to-220 package and with several fixed output voltages, making them useful in a wide range of applications. each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. if adequate heat sinking is provided, they can deliver over 1a output current. although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. product product product product specification specification specification specification absolute absolute absolute absolute maximum maximum maximum maximum ratings ratings ratings ratings electrical electrical electrical electrical characteristics characteristics characteristics characteristics (refer to test circuit, io = -500ma, vi = -15v, ci= 2.2uf, co=1.0uf unless otherwise specified) ( ( ( ( ta ta ta ta = = = = 25 25 25 25 c) c) c) c) o ( ( ( ( ta ta ta ta = = = = 25 25 25 25 c) c) c) c) o to-220 tiger electronic co.,ltd
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