1. for dual output models, delete suffix a at the end of the part number and split current equally between two outputs. 2. for single output 3000 vdc isolation, add -h to the end of the part number. 3. for dual output 3000 vdc isolation, replace a with -h in the part number. 4. for package type see connections table. 5. single & dual output 1 kv models can have optional pinout, add suffix -x to part number 6. operation at no load will not damage device but may not meet all specifications. notes 06-july-12 dcdc specification 1 watt ? single & dual output ? smd package ? industry standard pinouts ? 1000 vdc isolation, 3000 vdc optional ? mtbf >3.5 mhrs ? 40 o c to +85 o c operation ? 3 year warranty isf series input input voltage range ? nominal 10% input reverse voltage ? none protection output output voltage ? see table minimum load ? 10% (6) line regulation ? 1.2%/1% ? vin load regulation ? 7.5% max for a 10-100% load change setpoint accuracy ? 100-110% of nominal at 10% load ripple & noise ? single output: 100 mv pk-pk, dual output: 75 mv pk-pk, 20 mhz bandwidth temperature coefficient ? 0.03%/c general efficiency ? see table isolation voltage ? 1000 vdc standard, 3000 vdc optional isolation resistance ? 10 9 switching frequency ? 5/12 v input: 100 khz, 24 v input: 500 khz typical at nominal input, full load mtbf ? >3.5 mhrs to mil-hdbk-217f at 25 c, gb environmental operating temperature ? -40 c to +85 c, full load storage temperature ? -55 c to +125 c case temperature ? 105 c max cooling ? convection-cooled lead temperature ? 260 c, 0.06 in (1.5 mm) from case, 10 s xppower.com input voltage output voltage output current efficiency (typ) model number (4,5) 3.3 vdc 3.3 v 300 ma 73% isf0303a (1,2,3) 5.0 v 200 ma 74% isf0305a (1,2,3) 5 vdc 3.3 v 300 ma 72% isf0503a (2) 5.0 v 200 ma 77% isf0505a (1,2,3) 9.0 v 110 ma 76% isf0509a (1,2,3) 12.0 v 84 ma 79% isf0512a (1,2,3) 15.0 v 67 ma 78% ISF0515A (1,2,3) 12 vdc 5.0 v 200 ma 69% isf1205a (1,2,3) 9.0 v 110 ma 73% isf1209a (1,2,3) 12.0 v 84 ma 73% isf1212a (1,2,3) 15.0 v 67 ma 74% isf1215a (1,2,3) 24 vdc 3.3 v 300 ma 69% isf2403a 5.0 v 200 ma 70% isf2405a (1) 9.0 v 110 ma 72% isf2409a (1) 12.0 v 84 ma 75% isf2412a (1) 15.0 v 67 ma 76% isf2415a (1) 24.0 v 42 ma 77% isf2424a mechanical details connections 1234 5 876 910 12 4 5 7 10 recommended footprint 0.400 (10.16) 0.300 (7.62) 0.100 (2.54) 0.010 (0.25) 0.100 (2.54) 0.100 (2.54) 0.01 (0.25) 0.053 (1.35) 0.02 (0.25) 5 0.335 (8.5) 0.051 (1.30) 0.010 (0.25) 0.079 (2.00) 0.079 (2.00) 0.039 (1.00) 0.039 (1.00) 0.167 (4.25) 0.166 (4.25) 0.163 (4.13) 0.071 (1.80) 0.047 (1.20) 0.100 0.004 (2.54 0.10 ) 0.024 0.002 (0.60 0.05 ) 0.100 0.004 (2.54 0.10 ) 0.024 0.002 (0.60 0.05 ) 0.024 (0.60) 0.441 (11.20) 0.441 (11.20) 0.295 (7.50) 0.295 (7.50) 0.441 (11.20) 0.295 (7.50) 0.250 (6.50) 0.246 (6.25) 0.254 (6.50) 0.244 (6.25) 0.246 (6.25) 0.236 (6.00) 0.600 (15.24) 0.500 (12.70) 0.600 (15.24) 0.500 (12.70) top view grid: 0.1 x 0.1 in (2.54 x 2.54 mm) a1 package a package b package c a2 b1 c1 b2 top view side view top view side view 12 4 5 8 1234 5 876 7 8 10 11 12 123 56 top view side view no. o/p isolation pinout package +vin -vin -vout 0 v +vout n/c 1 1 kv standard b1 2 1 n/a 4 5 3,6,7,8 1 1 kv optional -x b2 2 1 n/a 4 5 8 1 3 kv optional -h c1 2 1 n/a 5 8 3,6,7, 10,11,12 2 1 kv standard a1 2 1 5 4 7 3,6,8,9,10 2 1 kv optional -x a2 2 1 5 4 7 10 2 3 kv optional -h c1 2 1 6 5 8 3,7,10, 11,12 1. all dimensions in inches (mm) 2. tolerance: 0.010 (0.25) 3. weight: 0.004 lbs (1.7 g) 4. pin tolerance: 0.004 (0.10 mm) notes
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