3.5 - 109 3.5 4 11 r1supersedes 1 05 r0 features ? surface mount hermetic package ? operates down to 1v dropout, 1.5v @ max. current ? .015% typical line regulation ? .01% typical load regulation ? 1% reference voltage ? electrically equivalent to lt1083, 84, 85 and 86 ? available hi-rel screened description these three terminal positive adjustable voltage regulators in surface mount package are designed to provide 7.5a, 5a, 3a, and 1.5a with higher efficiency than conventional voltage regulators. the devices are designed to operate to 1 volt input to output differential and the dropout voltage is specified as a function of load current. these devices are ideally suited for military applications where surface mount, small size, hermeticity and high reliability are required. absolute maximum ratings input voltage ........................................................... 35 v operating junction temperature range .......................- 55 c to + 150c storage temperature ........................................- 55 c to + 150c output current - om7621nm ............................................ 8.0 a om7622nm............................................ 5.5 a om7623nm............................................ 3.2 a om7624nm............................................ 1.5 a a om7623nmom7624nm om7621nmom7622nm surface mount low dropout positive adjustable regulators three terminal adjustable low dropout 7.5a, 5a, 3a, 1.5a positive voltage regulators pin connection mechanical outline 12 3 .500 .140 .415 .157 .015 .140 .140 .075 .075 .062 .375 .030 min. top view side view bottom view .625 pin 1: v in pin 2: adjust pin 3: v out downloaded from: http:///
om7621nm - om7624nm 3.5 electrical characteristics t j = -55c to + 125c parameter conditions min. typ. max. units reference voltage i out = 10 ma, t j = 25c (v in - v out ) = 3 v1.238 1.262 v 10ma i out i full load 1.5 v (v in - v out ) 25 v (note 3) ? 1.220 1.270 v line regulation i load = 10 ma, 1.5 v (v in - v out ) 15 v, t j = 25c 0.25 % % 15 v (v in - v out ) 35 v (notes 1 & 2) ? 0.55 % load regulation (v in - v out ) = 3 v 10 ma i out i full load t j = 25c (notes 1, 2, & 3) 0.9 % ? 1.1 % dropout voltage ?v ref = 1%, i out = i full load ? 1.5 v current limit om7621nm (v in - v out ) = 5 v ? 8.0 a (v in - v out ) = 25 v ? 0.4 a om7622nm (v in - v out ) = 5 v ? 5.5 a (v in - v out ) = 25 v ? 0.3 a om7623nm (v in - v out ) = 5 v ? 3.2 a (v in - v out ) = 25 v ? 0.2 a om7624nm (v in - v out ) = 5 v ? 1.5 a (v in - v out ) = 25 v ? 0.08 a minimum load current (v in - v out ) = 25 v ? 20 ma thermal regulation t a = 25c, 30 ms pulse om7621nm 0.01 %/w om7622nm .015 %/w om7623nm 0.02 %/w om7624nm 0.05 %/w ripple rejection f = 120 hz c adj = 25 f tantalum i out - i full load (v in - v out ) = 3 v60 db adjust pin current t j = 25c 80 a adjust pin current change 10ma i out i full load 1.5 v (v in - v out ) 25 v ? 5 a temperature stability -55c t j +150c 1.5 % long term stability t a = 125c, 1000 hrs. 1 % thermal resistance junction-to-case om7621nm 2.1 c/w om7622nm 3.1 c/w om7623nm 4.1 c/w om7624nm 5.3 c/w lead temperature 5 seconds at case 225 c note 1: load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. note 2: line and load regulation are guaranteed up to the maximum power dissipation (om7621/60w, om7622/45w, om7623/30w, om7624/15w). power dissipation is determined by the input/output differential and the output current. guaranteed maximum power dissipation will not be available over the full input/output voltage range.note 3: i full load curve is defined as the minimum value of current limit as a function of input to output voltage. note that power dissipation is only achievable over a limited range of input to output voltage. note 4: dropout voltage is specified over the full output current range of the device. the ? denotes the specifications which apply over the full operating temperature range. downloaded from: http:///
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