key features: ? 5w output power ? wide 2:1 inputs ? miniature smt case ? tight line/load regulation ? 1,500 vdc isolation ? -40oc to +60oc operation ? 21 standard models ? 1.0 mh mtbf minimum ? industry standard pin-out LF500RW wide input, 5w smt 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 electrical speci cations speci? cations typical @ +25c, nominal input voltage & rated output current, unless otherwise noted. speci? cations subject to change without notice. input parameter conditions min. typ. max. units input start voltage 12 vdc input 7.5 8.0 9.0 vdc 24 vdc input 14.0 16.0 18.0 48 vdc input 30.0 33.0 36.0 reverse polarity input current 1.0 a short circuit input power 1,000 3,000 mw input filter (pi) filter (meets en55022 class a) output parameter conditions min. typ. max. units output voltage accuracy 0.5 1.0 % output voltage balance dual output, balanced load 0.5 2.0 % line regulation for vin = min to max 0.1 0.3 % load regulation iout = 20% to 100% 0.3 1.0 % ripple & noise (20 mhz) (note 1) 50 85 mv p - p ripple & noise (20 mhz) 100 mv p - p ripple & noise (20 mhz) 15 mv rms output power protection 115 140 165 % transient response time (note 2) 25% load step change 250 500 s transient response deviation 2 6 % temperature coef? cient 0.01 0.02 %/ o c output short circuit continuous general parameter conditions min. typ. max. units isolation voltage 60 seconds 1,500 vdc isolation resistance 1,000 vdc 1,000 m isolation capacitance 100 khz, 1v 650 750 pf switching frequency 200 260 350 khz environmental parameter conditions min. typ. max. units operating temperature range ambient -40 +25 +71 o c operating temperature range case -40 +90 o c storage temperature range -40 +125 o c cooling free air convection humidity rh, non-condensing 95 % physical case size 1.31 x 0.81 x 0.40 inches (33.4 x 20.6 x 10.2 mm) case material non-conductive black plastic (ul94-v0) weight 0.49 oz (14g) reliability speci cations parameter conditions min. typ. max. units mtbf mil hdbk 217f, 25 o c, gnd benign 1.0 mhours absolute maximum ratings parameter conditions min. typ. max. units input voltage surge (1 sec) 12 vdc input -0.7 25.0 vdc 24 vdc input -0.7 50.0 48 vdc input -0.7 100.0 lead temperature 1.5 mm from case for 10 sec. 260 oc internal power dissipation all models 2,500 mw caution: exceeding absolute maximum ratings may damage the module. these are not continuous operating ratings. rohs compliant
model selection guide mechanical dimensions notes: ? all dimensions are typical in inches (mm) ? tolerance x.xx = 0.01 ( 0.25) ? pin 1 is marked by a ?dot? or indentation on the unit notes: 1. when measuring output ripple, it is recommended that an external 0.47 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 3.3 f capacitors will reduce the output ripple. 2. transient recovery is measured to within a 1% error band for a load step change of 75% to 100%. 3. no-load operation will not damage these units, however, they may not meet speci? cations. 4. dual output units may provide a 10v, 24v or 30v 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 12v input units a 4.7 f is recommended, and for 24v & 48v units a 2.2 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. remote on/off notes: 1. maximum sink current at the on/off pin (pin 1) during a logic low is 300 a. 2. maximum allowable leakage current of a switch connect- ed to the on/off terminal (pin 1) at logic high (2.5v to 100v) is 200 a. parameter condition units supply on 2.5 to 5.5 or open circuit vdc supply off -0.7 to 0.8 vdc standby input current 10 ma control common referenced to negative input (-vin) remote on/off derating curve single output (max) 680 f dual output (max) 100 f capacitive load board layout pin connections pin single dual 1 on/off on/off 2 -vin -vin 3 -vin -vin 9 nc common 10 nc nc 11 nc -vout 12 nc nc 13 nc nc 14 +vout +vout 15 nc nc 16 -vout common 22 +vin +vin 23 +vin +vin 24 nc nc nc: no connection model number input output re ected ripple cur. (ma) ef ciency (%, typ) fuse rating slow-blow (ma) voltage (vdc) current (ma) voltage (vdc) current (ma, max) current (ma, min) nominal range full-load no-load lf501rw 12 9.0 - 18.0 434 20 3.3 1,200 120.0 25 76 1,500 lf502rw 12 9.0 - 18.0 521 20 5.0 1,000 100.0 25 80 1,500 lf503rw 12 9.0 - 18.0 502 20 12.0 417 41.7 25 83 1,500 lf504rw 12 9.0 - 18.0 502 20 15.0 333 33.3 25 83 1,500 lf505rw 12 9.0 - 18.0 521 20 5.0 500 50.0 25 80 1,500 lf506rw 12 9.0 - 18.0 501 20 12.0 208 20.8 25 83 1,500 lf507rw 12 9.0 - 18.0 503 20 15.0 167 16.7 25 83 1,500 lf511rw 24 18.0 - 36.0 212 5 3.3 1,200 120.0 15 78 700 lf512rw 24 18.0 - 36.0 254 5 5.0 1,000 100.0 15 82 700 lf513rw 24 18.0 - 36.0 245 5 12.0 417 41.7 15 85 700 lf514rw 24 18.0 - 36.0 245 5 15.0 333 33.3 15 85 700 lf515rw 24 18.0 - 36.0 254 5 5.0 500 50.0 15 82 700 lf516rw 24 18.0 - 36.0 245 5 12.0 208 20.8 15 85 700 lf517rw 24 18.0 - 36.0 246 5 15.0 167 16.7 15 85 700 lf521rw 48 36.0 - 75.0 106 3 3.3 1,200 120.0 10 78 350 lf522rw 48 36.0 - 75.0 127 3 5.0 1,000 100.0 10 82 350 lf523rw 48 36.0 - 75.0 123 3 12.0 417 41.7 10 85 350 lf524rw 48 36.0 - 75.0 122 3 15.0 333 33.3 10 85 350 lf525rw 48 36.0 - 75.0 127 3 5.0 500 50.0 10 82 350 lf526rw 48 36.0 - 75.0 122 3 12.0 208 20.8 10 85 350 lf527rw 48 36.0 - 75.0 123 3 15.0 167 16.7 10 85 350 no tes: ? all dime ns ? to l eranc e x ? pi n 1 is ma o n the u n i micropower direct www.micropowerdirect.com 292 page street ste d stoughton, ma 02072 ? tel: (781) 344-8226 ? fax: (781) 344-8481 ? e-mail: sales@micropowerdirect.com
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