key features: 3w output power compact dip case 500 vdc isolation tight line/load regulation single & dual outputs 20 standard models 1.0 mh mtbf industry standard pin-out micropower direct 232 tosca drive stoughton, ma 02072 usa t: (781) 344-8226 f: (781) 344-8481 e: sales@micropowerdirect.com w: www.micropowerdirect.com A300R c o m p a c t , r e g u l a t e d , 3 w compact, regulated, 3w s i n g l e & d u a l o u t p u t single & dual output d c / d c c o n v e r t e r s dc/dc con vert ers series input parameter conditions min. typ. max. units input voltage range 5 vdc input 4.5 5.0 5.5 vdc 12 vdc input 10.8 12.0 13.2 24 vdc input 21.6 24.0 26.4 48 vdc input 43.2 48.0 52.8 input filter (pi) filter reverse polarity input current 0.5 a short circuit input power 2,500 mw output parameter conditions min. typ. max. units output voltage accuracy 2.0 4.0 % output voltage balance dual output , balanced loads 1.0 3.0 % line regulation vin = min to max 0.2 0.3 % load regulation iout = 10% to 100% 0.2 0.5 % ripple & noise (20 mhz) (note 1) 40 50 mv p - p ripple & noise (20 mhz) over line, load & temp. 75 mv p - p ripple & noise (20 mhz) 5 mv rms output power protection 120 % transient recovery time (note 2) 50% load step change 50 sec transient response deviation 6.0 % temperature coef? cient 0.01 0.02 %/oc output short circuit continuous general parameter conditions min. typ. max. units isolation voltage 60 seconds 500 vdc isolation resistance 500 vdc 1,000 m isolation capacitance 100 khz, 1v 100 150 pf switching frequency 40 80 khz environmental parameter conditions min. typ. max. units operating temperature range -25 +71 oc -25 +90 oc storage temperature range -40 +125 oc cooling free air convection humidity rh, non-condensing 95 % physical case size 1.25 x 0.80 x 0.40 inches (31.8 x 20.3 x 10.2 mm) case material non-conductive black plastic (ul94-v0) weight 0.42 oz (12g) reliability speci? cations parameter conditions min. typ. max. units mtbf mil hdbk 217f, 25oc, gnd benign 600 khours absolute maximum ratings parameter conditions min. typ. max. units input voltage surge (1 sec) 5 vdc input -0.7 7.5 vdc 12 vdc input -0.7 15.0 24 vdc input -0.7 30.0 48 vdc input -0.7 55.0 lead temperature 1.5 mm from case for 10 sec. 260 oc internal power dissipation all models 3,000 mw caution: exceeding absolute maximum ratings may damage the module. these are not continuous operating ratings. electrical speci? cations speci? cations typical @ +25c, nominal input voltage & rated output current, unless otherwise noted. speci? cations subject to change without notice.
model selection guide mechanical dimensions micropower direct www.micropowerdirect.com 232 tosca drive stoughton, ma 02072 tel: (781) 344-8226 fax: (781) 344-8481 e-mail: sales@micropowerdirect.com mechanical notes: ? all dimensions are typical in inch es (mm) ? tolerance x.xx = 0.01 (0.25) ? leads are tin plated for improved solderability. notes: 1. when measuring output ripple, it is recommended that an external 0.33 f ceramic capacitor be placed from the +vout pin to the -vout pin for single output units and from each output to common for dual output units. for noise sensitive applications, the use of 1.5 f capacitors will reduce the output ripple. 2. transient recovery is measured to within a 1% error band for a load step change of 50% to 100%. 3. operation at no-load will not damage these units. however, they may not meet all speci? cations. 4. dual output units may be connected to provide a 24 vdc or 30 vdc output. to do this, connect the load across the positive (+vout) and negative (-vout) outputs and ? oat the output common. 5. the converter should be connected to a low ac-impedance source. an input source with a highly inductive impedance may affect the stability of the converter. in applications where the converter output loading is high and input power is supplied over long lines, it may be necessary to use a capacitor on the input to insure start-up. in this case, it is recommended that a low esr (esr <1.0 at 100 khz) capacitor be mounted close to the converter. for 5v input units a 2.2 f is recommended, for 12v input units, a 1.0 f; and for 24v & 48v units a 0.47 f. 6. it is recommended that a fuse be used on the input of a power supply for protection. see the table above for the correct rating. pin connections single output dual output 470 f max 220 f max capacitive load pin single dual 1, 24 +vin +vin 2, 23 nc -vout 3, 22 nc common 10, 15 -vout common 11, 14 +vout +vout 12, 13 -vin -vin nc: no connection model number input output ef? ciency (%, typ) fuse rating slow-blow (ma) voltage (vdc) current (ma) re? ected ripple current (ma, typ) voltage (vdc) current (ma, max) current (ma, min) nominal range full-load no-load a301r 5 4.5 - 5.5 1,000 100 100 5.0 600 0.0 60 1,500 a302r 5 4.5 - 5.5 960 100 100 12.0 250 0.0 62 1,500 a303r 5 4.5 - 5.5 960 100 100 15.0 200 0.0 62 1,500 a304r 5 4.5 - 5.5 1,000 100 100 12.0 125 0.0 60 1,500 a305r 5 4.5 - 5.5 1,000 100 100 15.0 100 0.0 60 1,500 a311r 12 10.8 - 13.2 420 50 40 5.0 600 0.0 60 700 a312r 12 10.8 - 13.2 400 50 40 12.0 250 0.0 62 700 a313r 12 10.8 - 13.2 400 50 40 15.0 200 0.0 62 700 a314r 12 10.8 - 13.2 420 50 40 12.0 125 0.0 60 700 a315r 12 10.8 - 13.2 420 50 40 15.0 100 0.0 60 700 a321r 24 21.6 - 26.4 210 25 25 5.0 600 0.0 60 350 a322r 24 21.6 - 26.4 195 25 25 12.0 250 0.0 64 350 a323r 24 21.6 - 26.4 195 25 25 15.0 200 0.0 64 350 a324r 24 21.6 - 26.4 210 25 25 12.0 125 0.0 60 350 a325r 24 21.6 - 26.4 210 25 25 15.0 100 0.0 60 350 a331r 48 43.2 - 52.8 105 15 10 5.0 600 0.0 60 135 a332r 48 43.2 - 52.8 100 15 10 12.0 250 0.0 62 135 a333r 48 43.2 - 52.8 100 15 10 15.0 200 0.0 62 135 a334r 48 43.2 - 52.8 105 15 10 12.0 125 0.0 60 135 a335r 48 43.2 - 52.8 105 15 10 15.0 100 0.0 60 135 derating curve
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