key features: ? 2w output power ? ultra-miniature smt case ? 1,000 vdc isolation ? 5v, 12 & 24v inputs ? -40oc to +85oc operation ? 6 standard models ? 2.0 mh mtbf minimum ? industry standard pin-out lf200s ultra-miniature, 2w single output smt 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 reverse polarity input current 0.3 a input filter capacitor output parameter conditions min. typ. max. units output voltage accuracy 1.5 4.0 % line regulation for vin change of 1% 1.2 1.5 % load regulation, see note 1 see model selection guide ripple & noise (20 mhz) see note 2 50 75 mv p - p ripple & noise (20 mhz) over line, load & temp. 150 mv p - p ripple & noise (20 mhz) 5 mv rms output power protection 120 % temperature coef? cient 0.01 0.02 %/oc output short circuit momentary (0.5 sec.) general parameter conditions min. typ. max. units isolation voltage 60 seconds 1,000 vdc isolation resistance 500 vdc 10 g? isolation capacitance 100 khz, 1v 60 100 pf switching frequency 70 100 120 khz environmental parameter conditions min. typ. max. units operating temperature range ambient -40 +25 +85 oc operating temperature range case -40 +90 oc storage temperature range -40 +125 oc cooling free air convection humidity rh, non-condensing 95 % physical case size 0.50 x 0.36 x 0.34 inches (12.7 x 9.3 x 8.7 mm) case material molding (ul94-v0) weight 0.05 oz (1.5g) reliability speci cations parameter conditions min. typ. max. units mtbf mil hdbk 217f, 25oc, gnd benign 2.0 mhours absolute maximum ratings parameter conditions min. typ. max. units input voltage surge (1 sec) 5 vdc input -0.7 9.0 vdc 12 vdc input -0.7 18.0 24 vdc input -0.7 30.0 lead temperature 1.5 mm from case for 10 sec. 300 oc internal power dissipation all models 650 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. 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
model selection guide mechanical dimensions notes: 1. load regulation is measured for an output change of 20% to 100%. 2. 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 noise sensitive applications, the use of 1.5 f capacitors will reduce the output ripple. 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 2.2 f is recommended, for 12v input units, a 1.0 f and for 24v input models, a 0.47 f. 5. 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. notes: all dimensions are typical in inches (mm) tolerance x.xx = ?.01 (?.25) pin 1 is marked by a ?ot or indentation on the unit model number input output load regulation (%, max) 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 lf201s 5 4.5 - 5.5 519 60 5.0 400.0 8.0 11 77 47 1,000 LF202S 5 4.5 - 5.5 488 60 12.0 165.0 3.0 11 81 10 1,000 lf211s 12 10.8 - 13.2 213 30 5.0 400.0 8.0 8 78 47 500 lf212s 12 10.8 - 13.2 201 30 12.0 165.0 3.0 5 82 10 500 lf221s 24 21.6 - 26.4 106 15 5.0 400.0 8.0 8 78 47 200 lf222s 24 21.6 - 26.4 101 15 12.0 165.0 3.0 5 81 10 200 pin description 1- v i n 2+vin 3 no pin 4 -vout 5 +vout 6 no pin 7 no pin 8n a na = not for electrical connection pin connections board layout derating curve 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
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