key features: ? 3w output power ? 4:1 input voltage range ? 1,500 vdc isolation ? -40oc to +85oc temp range ? compact dip case ? single & dual outputs ? 1.0 mh mtbf ? industry standard pin-out ? low, low cost! A300ERU low cost, 4:1 input 3w single & dual output dc/dc con vert ers series micropower direct 292 page street suite d stoughton, ma 02072 usa t: (781) 344-8226 f: (781) 344-8481 e: sales@micropowerdirect.com w: www.micropowerdirect.com www.micropowerdirect.com electrical speci cations speci cations typical @ +25?, nominal input voltage & rated output current, unless otherwise noted. speci cations subject to change without notice. input parameter conditions min. typ. max. units input voltage range (see note 1) 24 vdc input 9.0 24.0 36.0 vdc 48 vdc input 18.0 48.0 72.0 input filter capacitors short circuit input power 2,000 mw output parameter conditions min. typ. max. units output voltage accuracy see note 2 1.0 3.0 % output voltage balance dual output , balanced loads 3.0 % line regulation vin = min to max 0.2 0.5 % load regulation iout = 10% to 100% 0.5 1.0 % ripple & noise (20 mhz) see note 3 75 150 mv p - p output power protection 120 % temperature coef? cient 0.03 %/oc output short circuit continuous (autorecovery) general parameter conditions min. typ. max. units isolation voltage 60 seconds 1,500 vdc isolation resistance 500 vdc 1,000 m isolation capacitance 100 pf switching frequency 300 khz environmental parameter conditions min. typ. max. units operating temperature range ambient -40 +85 oc storage temperature range -55 +125 oc cooling free air convection humidity rh, non-condensing 95 % physical case size (see note 4) 1.25 x 0.80 x 0.37 inches (31.8 x 20.3 x 9.5 mm) case material (see note 4) non-conductive black plastic (ul94v-0) weight 0.52 oz (15g) reliability speci cations parameter conditions min. typ. max. units mtbf mil hdbk 217f, 25oc, gnd benign 1.0 mhours absolute maximum ratings parameter conditions min. typ. max. units input voltage surge (1 sec) 24 vdc input -0.7 40.0 vdc 48 vdc input -0.7 80.0 lead temperature 1.5 mm from case for 10 sec 300 oc internal power dissipation all models 2,500 mw caution: exceeding absolute maximum ratings may damage the module. these are not continuous operating ratings.
model selection guide mechanical dimensions mechanical notes: all dimensions are typical in inch es (mm) tolerance x.xx = ?.01 (?.25) derating curve pin single dual 2, 3 -vin -vin 9 nc common 10 nc nc 11 nc -vout 14 +vout +vout 15 nc nc 16 -vout common 22, 23 +vin +vin nc: no connection pin connections 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 a301eru 24 9.0 - 36.0 169 16 10 3.3 909 90.0 74 750 a302eru 24 9.0 - 36.0 164 16 10 5.0 600 60.0 76 750 a303eru 24 9.0 - 36.0 157 16 10 12.0 250 25.0 80 750 a304eru 24 9.0 - 36.0 157 16 10 15.0 200 20.0 80 750 a305eru 24 9.0 - 36.0 164 16 10 5.0 300 30.0 76 750 a306eru 24 9.0 - 36.0 157 16 10 12.0 125 12.0 80 750 a307eru 24 9.0 - 36.0 157 16 10 15.0 100 10.0 80 750 a311eru 48 18.0 - 72.0 84 8 10 3.3 909 90.0 74 500 a312eru 48 18.0 - 72.0 80 8 10 5.0 600 60.0 78 500 a313eru 48 18.0 - 72.0 78 8 10 12.0 250 25.0 80 500 a314eru 48 18.0 - 72.0 78 8 10 15.0 200 20.0 80 500 a315eru 48 18.0 - 72.0 82 8 10 5.0 300 30.0 76 500 a316eru 48 18.0 - 72.0 78 8 10 12.0 125 12.0 80 500 a317eru 48 18.0 - 72.0 78 8 10 15.0 100 10.0 80 500 notes: 1. exceeding the input range by a signi cant margin may damage the units. for 24v input the input voltage should not exceed 40v; for 48v models it should not exceed 80v. 2. voltage accuracy for the negative output on dual output models is typically 3% with a max of 5%. 3. maximum ouput noise for dual output units is 150 mv p-p. when measuring output ripple, it is recom- mended 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. 4. the optional metal package is nickel plated steel. the dimensions of the metal package are 1.25 x 0.80 x 0.39 inches (31.8 x 20.3 x 10.0 mm). 5. these units should not be operated with a load under the speci ed minimum. operation at no-load will increase ripple signi cantly and may cause damage to the unit. 6. these converters are speci ed for operation without external components. however, in some applications the addition of input/output capacitors will enhance stability and reduce output ripple. recommended capacitor values are: vin: 10 f - 47 f vout: 10 f/100 ma for applications requiring very low output noise levels, a simple lc lter should be effective. 7. the maximum load capacitance is: vout maximum load capacitance vout maximum load capacitance 3.3 vdc 2,200 f 5 vdc 2,200 f 5 vdc 1,000 f 12 vdc 1,000 f 12 vdc 470 f 15 vdc 470 f 15 vdc 330 f 8. it is recommended that a fuse be used on the input of a power supply for protection. see the model selection table above for the correct rating. micropower direct we power your success - for less! 292 page street ste d stoughton, ma 02072 ? tel: (781) 344-8226 ? fax: (781) 344-8481 ? e-mail: sales@micropowerdirect.com www.micropowerdirect.com for models with a metal case, add an ?m? to the model number (ie: a315erum)
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