3.3 - 119 3.3 om3914nkm 1 08 r2supersedes 4 11 r1 om3914stm om3914ntm three terminal, negative adjustable voltage regulator in hermetic packages 3 amp negative adjustable regulator approved to desc drawing 5962-87741 features similar to industry standard lt1033 approved to desc standardized military drawing number 5962-8774101 adjustable output voltage built in thermal overload protection short circuit current limiting maximum output voltage tolerance is guaranteed to ?% guaranteed dropout voltage at multiple current levels to-257 available in isolated and non-isolated packages description this three terminal negative adjustable voltage regulator is designed to provide 3a with higher efficiency than conventional voltage regulators. this device is designed to operate down to 1 volt input to output differential and the dropout voltage is fully specified as a function of load current. supplied in easy-to-use hermetic to-257 and to-3, this device is ideally suited for military applications where small size and high reliability is required. absolute maximum ratings @ 25? power dissipation (p d ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . internally limited input - output voltage differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 voperating junction temperature range . . . . . . . . . . . . . . . . . . . . . - 55? to + 150? storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65? to + 150? lead temperature (soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300? thermal resistance junction to case: (to-257, isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5?/w(to-257, non-isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3?/w (to-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0?/w recommended operating conditions: output voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3v to -15 v ambient operating temperature range (t a ) . . . . . . . . . . . . . . . . - 55? to + 125? input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 5v to -35 v downloaded from: http:///
3.3 - 120 3.3 om3914stm om3914ntm om3914nkm electrical characteristics -55? t a +125? (unless otherwise specified) parameter symbol test conditions min. max. unit reference voltage v ref ? v in - v out ? = 5 v, i out = 5 ma, t a = 25 c -1.238 -1.262 v 3 v ? v in - v out ? 35 v -1.215 -1.285 line regulation ? v out 3 v ? v in - v out ? 35 v 0.015 %/v (note 1) ? v in 0.04 load regulation ? v out ? v out ? 5 v, t a = 25 c 50 mv (note 1) ? i out 10 ma i out i max. 75 ? v out ? 5.0 v 1.0 % 10 ma i out i max. 1.5 thermal regulation - 30 ms pulse, t a = 25 c 0.02 %/w ripple rejection ? v in ? v out ? = -10 v, f = 120 hz, c adj = 0 56 db (note 2) ? v ref 53 ? v out ? = -10 v, f = 120 hz, c adj = 10 ? 70 db 60 adjust pin current i adj v diff = 35 v, i l = 10 ma 100 ? adjust pin current change ? i adj 10 ma i out i max. 2.0 ? 3 v ? v in - v out ? 35 v 5.0 minimum load current i min ? v in - v out ? 35 v 5.0 ma ? v in - v out ? 10 v 3.0 current limit i lim ? v in - v out ? 10 v 3.0 6.0 a 3.0 ? v in - v out ? = 35 v 0.5 2.5 a 0.5 temperature stability ? v out -55 c t j +125 c 1.5 % (note 2) ? t long term stability ? v out t a = +125 c, t = 1000 hrs 1.0 % (note 2) ? t notes: 1. line and load regulation are measured at a constant junction temperature using a low duty cycle pulse technique. although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 30 w. power dissipation is determined by the input/output differential voltage and the output current. guaranteed maximum power dissipation will not be available over the full input/output voltage range. 2. guaranteed by design, characterization or correlation to other tested parameters. 3. the ? denotes the specifications which apply over the full operating temperature range. part numbering system voltage regulators om-3914 -s -t -m company identification part number s= isolated n= non isolated package (see package codes*) screening m= mil-m 38535 part number designator standard military drawing number omnirel part number 5962-8774101u om3914stm 5962-8774101t om3914ntm 5962-8774101x om3914nkm ??= isolated??= non-isolated downloaded from: http:///
3.3 - 121 3.3 om3914stm om3914ntm om3914nkm typical performance characteristics reference voltage (v) 1.2701.260 1.250 1.240 1.230 -75 -50 -25 0 25 50 75 100 125 150 temperature (?) output current (a) 54 3 2 1 0 0 5 10 15 20 25 30 35 input-output differential (v) output voltage deviation (%) 0.80.4 0 -0.4-0.8 0 0.8 1.6 2.4 3.2 4.0 output current (a) ripple rejection (db) 100 8060 40 20 0 0.01 0.1 1 10 c adj = 0 v in = -15 v v out = -10 v c adj = 10? f = 120hz, t j = 25? current (ma) 1.81.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 1 02 03 04 0 input-output differential (v) output current (a) t j = -55? t j = 25? t j = 150? input-output differential (v) 2.82.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 0.5 1.0 1.5 2.0 2.5 3.0 output current (a) t j = -55? t j = -25? t j = -150? dropout voltage temperature stability minimum load current ripple rejection load regulation guaranteed minimum output current downloaded from: http:///
3.3 om3914stm om3914ntm om3914nkm typical applications front view 123 mechanical outlines .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 multiple tracking regulators high stability regulator -v out -v in v in v out c2 + 5? c1 c3 + 10? 2? adj. om3914 r2r1 + v ref i adj v out = v ref ( 1+ r2 ) + i adj (r2) r1 r2 -v out 3 -v in + 2? + 2? + 2? 2? in4002 in4002 + solidtantalum -v out 2 2? + solidtantalum -v out 1 2? + solidtantalum v in v out adj. om3914 v in v out adj. om3914 v in v out adj. om3914 c1 r1 r2 r#n + c3 10? r31.5k 1% -v out -v in v in v out + 5? 2? adj. 7v lm329b om3914 r2* r11k 1% + solidtantalum v out 9.08 x 10 -3 *r2 = notes: case is metal/hermetically sealed isolated tab tab 4 case t pin 1 - adjustpin 2 - vin pin 3 - vout tab - vin case u pin 1 - adjustpin 2 - vin pin 3 - vout tab - no connection 1.1971.177 0.6750.655 0.188 r. max. 0.4400.420 0.1610.151 0.525 r. max. 0.2250.205 seating plane 0.312 min. 0.4500.250 0.0430.038 2 plcs. 0.135 max. 0.875 max. 1.53 ref. om3914nkm pin 1 adjust pin 2 vout case vin to-3 downloaded from: http:///
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