cui .com date 09/28/2011 page 1 of 5 series: v78w-500 description: non-isolated switching regulator model input voltage output voltage output current output power ripple and noise 1 ef ciency level range (vdc) (vdc) min (ma) max (ma) max (w) max (mvp-p) vin min (%) v7803w-500 9 ~ 72 3.3 10 500 1.65 60 82 v7805w-500 9 ~ 72 5 10 500 2.5 60 87 V7806W-500 9 ~ 72 6.5 10 500 3.25 60 91 v7809w-500 14 ~ 72 9 10 500 4.5 60 92 v7812w-500 17 ~ 72 12 10 500 6 60 93 v7815w-500 20 ~ 72 15 10 500 7.5 60 94 v7824w-500 2 36 ~ 72 24 6 300 7.2 60 95 notes: 1. 20mhz bandwidth, from 10% to 100% load 2. v7824w-500 output current is 300 ma (max) date 09/28/2011 page 1 of 5 features ? up to 500 ma current output ? extremly high efficiency up to 95% ? no heatsink required ? pin comparable to lm78 linear regulators ? available in straight and right angle sip packages ? up to 8:1 ultra wide input ? low ripple and noise ? short circuit protections ? wide temperature (-40c ~ 85c) rohs part number key v78 xx w - xxx x output voltage base number output current blank = standard r = right angle
cui .com date 09/28/2011 page 2 of 5 cui inc series: v78w-500 description: dc-dc converter input parameter conditions/description min typ max units operating input voltage 3, 5, 6.5 v models 9 v model 12 v model 15 v model 24 v model 9 14 17 20 36 48 48 48 48 48 72 72 72 72 72 vdc vdc vdc vdc vdc output parameter conditions/description min typ max units line regulation measured from low line to high line 0.4 1.0 % load regulation measured from 10% to full load 0.3 0.6 % voltage accuracy at 100% load 2 3 % switching frequency 100% load 120 800 khz temperature coef cient -40c ~ +85c ambient 0.015 %/c quiescent current vin = nominal, min. load 1 5 ma tendencies load at 10% to 100% load 1.0 100 1.5 mv ms max capacitance load 100 f protections parameter conditions/description min typ max units short circuit protection continuous, automatic recovery short circuit input power vin = nominal 0.72 1.2 w thermal shutdown 160 c current limit vin = nominal 700 1200 ma safety and compliance parameter conditions/description min typ max units thermal resistance 60 c/w safety approvals en-60950-1 emi/emc en55022, class b (refer to page 4), iec/en 61000-4-2 level 4 rohs compliant yes mtbf 25c (mil-hdbk-217k) 71c (mil-hdbk-217k) 3,500,000 1,500,000 hours hours environmental parameter conditions/description min typ max units case operating temperature 65 100 c operating temperature power derating above 71c -40 85 c storage temperature -55 125 c storage humidity non-condensing 95 % note: 1. all speci cations measured at ta=25c, humidity <75%, nominal input voltage and rated output load unless otherwise speci ed.
cui .com date 09/28/2011 page 3 of 5 cui inc series: v78w-500 description: dc-dc converter 2.15 0.085 2.15 0.085 5.08 0.200 5.08 0.200 2 0.020 0.50 0.55 0.022 13 9.00 0.354 9.00 0.354 4.10 0.161 2 13 11.50 0.453 0.020 17.50 0.689 0.50 4.10 0.161 11.50 0.453 1.50 0.059 17.50 0.689 0.50 0.020 mechanical drawing mechanical parameter conditions/description min typ max units dimensions 11.5 x 9.0 x 17.5 mm (0.45 x 0.35 x 0.69 inch) case material plastic (ul94-v0) weight 4g units: mm [in] all pins on a 2.54mm pitch pin tolerance: 0.10mm[0.004in] general tolerance: 0.25mm[0.010in] general tolerance (right angle): 0.50mm[0.020in] v78w-500 v78w-500r recommended footprint 1.10 0.043 (3 plcs) 5.08 0.200 2.15 0.085 2.54 0.100 2.54 0.100 1.10 0.043 (3 plcs) 1.35 0.053 5.08 0.200 2.54 0.100 2.54 0.100 1 2 13 2 3 pin connections 1 +vin 2 gnd 3 +vout v78w-500 v78w-500r
cui .com date 09/28/2011 page 4 of 5 cui inc series: v78w-500 description: dc-dc converter typical application circuit modules protect recommended circuit application example derating curve operatin g te mp . ( ) c temperature deratin g graph 1 2 3 +vin gnd +vout gnd c1 v78w-500(r) 1 2 3 +vin gnd gnd f +5v/850ma c1 c2 +12v/100m a reverse protection v7812w-500(r) v7805w-500(r) +vin +vout gn d gnd 1 3 2 +vin +vout- gnd gn d 1 3 2 schottky diode vout= 0.3v v78w-500(r) v78w-500(r) emc recommended circuit +vin nd 1.0 f f-3.3 0.5mh-2mh 0.68 f-2.2 f vin +vout gnd 270 f-4 70 f r l 0.5mh-2mh 1 2 3 1. the regulator proposed to establish the input voltage by soft-start, no plug and play, if the input voltage changes from low voltage to high voltage abruptly, the regulator might be damaged. 2. if the applications is high-voltage input, the regulator must add an external capacitor c1( 47 f/100v) to prevent voltage spikes caused by damage to the module. 3. no parallel connection. 1. the input current amount of the back-grade regulator and the pre-class load should be less than or equal the max load current of the pre-class regulator. 2. if further ltering is required, please add components as per the above circuit (we recommend not to add components), if request, please make sure the capacitors c1 47 f, c2 10 f more close to the back-grade regulator. high voltage input, multiple outputs, with greater load
date 09/28/2011 page 5 of 5 cui inc series: v78w-500 description: dc-dc converter 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 09/28/2011 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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