3 . 3 - 1 8 09 r0 (cots) commercial off-the-shelf 3.0 amp positive adjust able volt age regulator in t o-257 p ackage features ? isolated hermetic package, jedec to-257aa outline ? reference v oltages set to 2% ? built-in thermal overload protection ? short circuit current limiting description these three terminal positive regulators are supplied in a hermetically sealed isolated, metal t o-257 package. all protective features are designed into the circuit including thermal shutdown, current limiting and safe-area control. w ith heat sinking, they can deliver over 3.0 amps of output current. these units feature 2% initial voltage tolerance, 0.35% load regulation and .01% line regula - t i o n . absolute maximum ra tings @ 25c input - output v oltage dif ferential ........................................ +35 v operating junction t emperature range ........................ - 55c to + 150c storage t emperature range ................................. - 65c to + 150c t ypical power/thermal characteristics: rated power @ 25c t c ............................................................... 25 w t a ................................................................ 3 w thermal resistance .............................................. 4.2c/w ? ja .............................................................. 50c/w a COM150T three t erminal, adjustable voltage, 3.0 amp precision positive regulator in hermetic jedec t o-257aa package
COM150T 205 craw ford street, leominster, ma 01453 usa (978) 534-5776 fax (978) 537-4246 3 . 3 electrical characteristics -55? t a 125? (note 1) unless otherwise specified test symbol conditions limits unit min. max. reference voltage v ref i out = 10ma 1.20 1.30 v t a = 25? 3.0v (v i n - v out ) 35v, p 30w 1.20 1.30 v 10ma i out 3.0a (note 2) line regulation r line 3.0v (v i n - v out ) 35v, 0.01 % / v (note 2) i out = 10ma, t j = 25? 3.0v (v i n - v out ) 35v, 0.05 % / v i out = 10ma load regulation r load 10ma i out 3.0a, 17.5 m v (note 2) v out 5.0a, t j = 25? 10ma i out 3.0a, 50 m v v out 5.0a 10ma i out 3.0a, 0.35 % v out 5.0a, t j = 25? 10ma i out 3.0a, 1.0 % v out 5.0a thermal regulation 20ms pulse, t a = 2 5 c 0.01 % / w ripple rejection r n v out = 10v, f = 120hz 66 d b (note 3) c adj = 10? adjust pin current i adj 100 a adjust pin i adj 10ma i out 3.0a, i out = 10ma 5.0 a current change 3.0v (v i n - v out ) 35v miminum load current i min (v i n - v out ) = 35v 5.0 m a current limit i cl (v i n - v out ) 10v 3.0 a (v i n - v out ) = 30v 0.3 a notes: 1 . unless otherwise specified, these specifications apply for (v in - v out ) = 5.0v and i out = 1.5a. 2 . regulation is measured at a constant junction temperature using a pulse technique. changes in output voltage due to heating effects are covered under the specification for thermal regulation. 3 . guaranteed if not tested to the limits specified. mechanical outline to-257aa .430 .410 .200 .190 .038 max. .005 .120 typ. .537 .527 .665 .645 .420 .410 .150 .140 .750 .500 .100 typ. .035 .025 .045 .035 pin connection front view pin 1: adjust pin 2: vout pin 3: vin tab: isolated 123
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