cui .com date 09/20/2011 page 1 of 5 series: VOF-25 description: ac-dc power supply model output voltage output cur- rent output power ripple 1 and noise ef ciency (vdc) max (a) max (w) max (mvp-p) typ (%) VOF-25-3.3 3.3 4.4 15 50 70 VOF-25-5 5 4.4 22 50 73 VOF-25-7.5 7.5 3.0 23 75 73 VOF-25-9 9 2.7 24 90 77 VOF-25-12 12 2.0 24 120 80 VOF-25-15 15 1.6 24 150 80 VOF-25-24 24 1.0 24 240 82 notes: 1. ripple & noise are measured at 20 mhz bw with 0.1 f ceramic cap and a 10 f electrolytic capacitors on the output and the two earth ground pads are connected to input earth ground. part number key VOF-25 - xx base number output voltage features ? up to 25 w continuous power ? compact size ? universal input (85~264 vac) ? single output from 3.3~24 v ? user trimmable output voltage ? 3000 v isolation ? over current, over voltage, and short circuit protections ? ul/cul and tuv 60950-1 safety approvals ? efficiency up to 82% rohs
cui .com cui inc series: VOF-25 description: ac-dc power supply date 09/20/2011 page 2 of 5 input parameter conditions/description min typ max units voltage 85 120 264 375 vac vdc frequency 47 63 hz input current 110 vac 220 vac 0.7 0.35 a a inrush current 110 vac, full load, cold start 220 vac, full load, cold start 20 40 a a input fuse built-in, non-user serviceable output parameter conditions/description min typ max units line regulation high line to low line at full load 0.5 % load regulation full load to 10% load 1 % temperature coef cient 0.05 %/c hold-up time 115 vac at full load 16 ms adjustability adjustable with built-in trim pot -5 +5 % switching frequency 45 50 55 khz protections parameter conditions/description min typ max units over voltage protection clamped by tvs 115 % over current protection automatically recovers 105 %io short circuit protection protected, long term short circuit may reduce reli- ability safety & compliance parameter conditions/description min nom max units isolation voltage primary to secondary for 1 minute primary to transformer core for 1 minute primary to ground for 1 minute 3,000 1,500 1,500 vac vac vac isolation resistance input to output at 500 vdc at 25c 50 m safety approvals tuv en60950, ce, ul/cul 60950-1 emi/emc fcc class b, en55022 class b leakage current 1.5 ma rohs compliant yes mtbf according to mil-hdbk-217f 250,000 hours environmental parameter conditions/description min nom max units operating temperature see derating curve 0 60 c storage temperature -20 85 c operating humidity non-condensing 20 90 % storage humidity non-condensing 20 95 % operating altitude 10,000 3,000 ft m storage altitude 30,000 9,000 ft m
cui .com cui inc series: VOF-25 description: ac-dc power supply date 09/20/2011 page 3 of 5 mechanical parameter conditions/description min typ max units dimensions 3.5 x 2 x 0.98 (88.9 x 51 x 24.9 mm) inch weight 0.09 kg cooling method free air convection or forced air (see derating curves below) mating connectors parameter conditions/description ac input (cn1) mates with molex housing 09-50-3031 with molex 2878 series crimp contact dc output (cn2) mates with molex housing 09-50-3041 with molex 2878 series crimp contact derating curves 60 100 80 40 60 20 0 20 0 5 0 1 40 30 ambient temperature (c) ambient temperature (c) convection forced air (0.5m /min) (18 cfm) forced air (0.5m /min) (18 cfm) 3 3 load factor (%) load factor (%) load factor (%) 2 1 2 1 0 0 30 40 50 10 20 0 20 60 40 80 100 60 220 100 80 40 60 20 0 0 85 110 input voltage vac 264 90 1 mounting method 1. output power vs. ambient temperature 2. output power vs. input voltage a. 3.3, 5 v models all models b. all other models horizontal (performance evaluations conducted under this mounting method)
cui .com cui inc series: VOF-25 description: ac-dc power supply date 09/20/2011 page 4 of 5 mechanical drawing 20.32 0.80 1.6 0.06 3.0 max (lead) cn1 2 1 cn2 1 2 3 4 vadj 3 2.01 51.0 1.67 42.5 3.54 90.0 81.7 3.22 3.5 (4 plcs) mounting hole c cn1 1l 2 no pin 3n cn2 1-vo 2-vo 3+vo 4+vo tolerance: ?.3mm unless otherwise speci ed
cui inc series: VOF-25 description: ac-dc power supply date 09/20/2011 page 5 of 5 cui offers a two (2) year limited warranty. complete warranty information is listed on our website. cui reserves the right to make changes to the product at any time without notice. information provided by cui is believed to b e accurate and reliable. however, no responsibility is assumed by cui for its use, nor for any infringements of patents or other rights of third parties which may result from its use . cui products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. headquarters 20050 sw 112th ave. tualatin, or 97062 800.275.4899 fax 503.612.2383 cui .com techsupport@cui.com rev. description date 1.0 initial release 04/03/2009 1.01 corrected cn1 connector designation on mech drawing 02/16/2010 1.02 dimension added to drawing 05/02/2011 1.03 applied new spec template 05/13/2011 1.04 added mtbf data 09/20/2011 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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