key features: ? 2w output power ? 2:1 input voltage range ? 1,500 vdc isolation ? short circuit protected ? miniature smt package ? single & dual outputs ? 1.0 mh mtbf ? industry standard pin-out lf200rw miniature smt, 2w wide input range dc/dc con vert ers series input parameter conditions min. typ. max. units input start voltage 5 vdc input 3.5 4.0 4.5 vdc 12 vdc input 4.5 7.0 9.0 24 vdc input 8.0 12.0 18.0 48 vdc input 16.0 24.0 36.0 input filter ? (pi) filter reverse polarity input current 1.0 a short circuit input power 1,500 mw output parameter conditions min. typ. max. units output voltage accuracy 1.0 2.0 % output voltage balance 1.0 2.0 % line regulation vin = min to max 0.3 0.5 % load regulation iout = 25% to 100% 0.5 0.75 % ripple & noise (20 mhz) see note 1 30 50 mv p - p ripple & noise (20 mhz) over line, load & temp. 75 mv p - p ripple & noise (20 mhz) 15 mv rms output power protection 120 % transient response time, see note 2 50% load step change 100 300 sec transient response deviation 3.0 5.0 % temperature coef? cient 0.01 0.02 %/c output short circuit continuous (autorecovery) general parameter conditions min. typ. max. units isolation voltage 60 seconds 1,500 vdc isolation test voltage flash tested for 1 sec 1,650 vdc isolation resistance 1,000 vdc 1,000 m? isolation capacitance 100 khz, 1v 250 420 pf switching frequency 300 khz environmental parameter conditions min. typ. max. units operating temperature range ambient -40 +25 +65 c operating temperature range case +90 c storage temperature range -40 +125 c cooling free air convection humidity rh, non-condensing 95 % physical case size 0.94 x 0.54 x 0.30 inches (23.8 x 13.7 x 7.62 mm) case material non-conductive black plastic (ul94-v0) weight 0.18 oz (5.1g) reliability speci cations parameter conditions min. typ. max. units mtbf mil hdbk 217f, 25c, gnd benign 1.0 mhours absolute maximum ratings parameter conditions min. typ. max. units input voltage surge (1 sec) 5 vdc input -0.7 11.0 vdc 12 vdc input -0.7 25.0 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 c internal power dissipation all models 1,800 mw caution: exceeding absolute maximum ratings may damage the module. these are not continuous operating ratings. electrical speci cations speci cations typical @ +25?, nominal input voltage & rated output current, unless otherwise noted. speci cations subject to change without notice. www.micropowerdirect.com 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
model selection guide mechanical dimensions mechanical notes: all dimensions are typical in inch es (mm) tolerance x.xx = ?.01 (?.25) notes: 1. when measuring output ripple, it is recommended that an external 0.47 ? 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 ? 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. operation at no-load will not damage these units. however, they may not meet all speci cations. 4. 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 8.2 ? is recommended, for 12v input units, a 3.3 ?; and for 24v & 48v units a 1.5 ?. 6. it s recommended that a fuse be used on the power supply input for protection. see the table above for the correct rating. model number input output re ected ripple current (ma) ef ciency (%, typ) output capacitive load ( f, max) fuse rating slow-blow (ma) voltage (vdc) current (ma) voltage (vdc) current (ma, max) current (ma, min) nominal range full-load no-load lf201rw 5 4.5 - 9.0 471 40 3.3 500.0 125.0 100 70 2,200 1,000 lf202rw 5 4.5 - 9.0 548 40 5.0 400.0 100.0 100 73 1,000 1,000 lf203rw 5 4.5 - 9.0 534 40 12.0 167.0 42.0 100 75 170 1,000 lf204rw 5 4.5 - 9.0 582 40 15.0 134.0 33.0 100 73 110 1,000 LF205RW 5 4.5 - 9.0 667 40 5.0 200.0 50.0 100 64 470 1,000 lf206rw 5 4.5 - 9.0 615 40 12.0 83.0 21.0 100 69 100 1,000 lf207rw 5 4.5 - 9.0 598 40 15.0 67.0 17.0 100 71 47 1,000 lf211rw 12 9.0 - 18.0 184 20 3.3 500.0 125.0 25 73 2,200 500 lf212rw 12 9.0 - 18.0 217 20 5.0 400.0 100.0 25 77 1,000 500 lf213rw 12 9.0 - 18.0 209 20 12.0 167.0 42.0 25 80 170 500 lf214rw 12 9.0 - 18.0 220 20 15.0 134.0 33.0 25 80 110 500 lf215rw 12 9.0 - 18.0 242 20 5.0 200.0 50.0 25 73 470 500 lf216rw 12 9.0 - 18.0 224 20 12.0 83.0 21.0 25 78 100 500 lf217rw 12 9.0 - 18.0 226 20 15.0 67.0 17.0 25 78 47 500 lf221rw 24 18.0 - 36.0 96 10 3.3 500.0 125.0 15 72 2,200 250 lf222rw 24 18.0 - 36.0 109 10 5.0 400.0 100.0 15 77 1,000 250 lf223rw 24 18.0 - 36.0 109 10 12.0 167.0 42.0 15 80 170 250 lf224rw 24 18.0 - 36.0 108 10 15.0 134.0 33.0 15 81 110 250 lf225rw 24 18.0 - 36.0 119 10 5.0 200.0 50.0 15 74 470 250 lf226rw 24 18.0 - 36.0 112 10 12.0 83.0 21.0 15 78 100 250 lf227rw 24 18.0 - 36.0 110 10 15.0 67.0 17.0 15 80 47 250 lf231rw 48 36.0 - 72.0 49 8 3.3 500.0 125.0 10 71 2,200 120 lf232rw 48 36.0 - 72.0 57 8 5.0 400.0 100.0 10 73 1,000 120 lf233rw 48 36.0 - 72.0 53 8 12.0 167.0 42.0 10 79 170 120 lf234rw 48 36.0 - 72.0 55 8 15.0 134.0 33.0 10 79 110 120 lf235rw 48 36.0 - 72.0 62 8 5.0 200.0 50.0 10 71 470 120 lf236rw 48 36.0 - 72.0 57 8 12.0 83.0 21.0 10 77 100 120 lf237rw 48 36.0 - 72.0 57 8 15.0 67.0 17.0 10 77 47 120 pin single dual 1 -vin -vin 7nc nc 8 nc common 9 +vout +vout 10 -vout -vout 16 +vin +vin nc = no connection pin connections derating curve solder layout 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 output www.micropowerdirect.com
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