internally limited 35v -55c to + 150c -65c to + 150c 300c 2.75c/w 2.3c/w 5.0a LM1083HN 02/00 semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk mechanical data dimensions in mm 123 17.65 (0.695) 17.39 (0.685) 4.19 (0.165) 3.94 (0.155) dia. 13.84 (0.545) 13.58 (0.535) 17.96 (0.707) 17.70 (0.697) 19.05 (0.750) 12.70 (0.500) 1.65 (0.065) 1.39 (0.055) typ. 5.08 (0.200) bsc 3.56 (0.140) bsc 21.21 (0.835) 20.70 (0.815) 1.14 (0.707) 0.88 (0.035) 6.86 (0.270) 6.09 (0.240) 7.5 amp low dropout positive adjustable regulator in to258 hermetic package features ? adjustable output voltage output voltage tolerance 1% hermetic isolated to258 built in thermal overload protection short circuit current limit low dropout voltage screening options available to?258 metal package absolute maximum ratings @25c pin 1? adjust pin 2 ? vout pin 3 ? vin power dissipation (pd) input - output voltage differential operating junction temperature range storage temperature range lead temperature (soldering 10 seconds) thermal resistance: q jc (isolated) q jc (non-isolated) maximum output current the lm 1083hn low drop positive adjustable regulator is designed to provide 7.5a with higher efficiency than a standard device. all internal circuitry is designed to operate down to 1v input/output differential.
parameter test conditions min. typ. max. unit 1.238 1.262 1.225 1.270 0.2 0.5 0.3 0.4 1.5 0.015 60 120 5.0 10 8.0 0.4 1.5 1.0 LM1083HN 02/00 semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk v ref reference voltage v out line regulation (note 1) v in v out load regulation v in v do dropout voltage thermal regulation v in ripple rejection v out i adj ajust pin current 3 i adj ajust pin current change i min minimum load current i lim current limit v out temperature stability (note 2) t v out long term stability (note 2) t v in - v out =3.0v i out = 10ma t a = 25c 1.5v v in - v out 25v 10ma i out i fl 1.5 v in - v out 15v i out = 10ma t a = 25c 15v v in - v out 35v i out =10ma v in - v out =3.0v t a = 25c 10ma i out i fl i out = i fl d v ref = 1% 30ms pulse t a = +25c f = 120h z, c adj = 25m f c out = 25m f (tantalum), i fl = 3.0a v in - v out =3.0v 1.5v v in - v out 25v 10ma i out i fl 1.5v v in - v out 25v 10ma i out i fl v in - v out = 25v v in - v out = 5.0v v in - v out = 25v tj = -55 to +125c t a = +125c, t = 1000hrs v % % v %w db m a m a ma a % electrical characteristics (per diode) notes: 1 line and load regulation are measured at a constant junction temperature using a low duty cycle pulse technique. power dissipation is internally limted. regulation is guaranteed up to maximum power dissipation of 60 w. power dissipation is determined by the input/output differential voltage and the output current. guaranteed maximum power dissipation is not available over the full input/output voltage range. 2 guaranteed by design, characterization or correlation to other tested parameters. 3 specification applies over the full operating temperature range. 4i fl is defined as the minimum value of current limit as a function of input to output voltage.
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