for more information, please visit the product page. ????????? ?????????????????? cui .com date 11/08/2012 page 1 of 6 series: v78-500 description: non-isolated switching regulator date 11/08/2012 page 1 of 6 features ? 0.5 a current output ? extremely high efficiency up to 97% ? no heat sink required ? pin compatible to lm78xx linear regulators ? available in straight and right angle sip packages ? low ripple and noise ? short circuit protection, thermal shutdown ? wide temperature (-40~85c) rohs part number key model input voltage output voltage output current output power ripple and noise 1 ef ciency typ (vdc) range (vdc) (vdc) max (ma) max (w) max (mvp-p) vin min (%) vin max (%) v7801-500 12 4.75~26 1.5 500 0.75 35 76 66 v78x2-500 12 4.75~28 1.8 500 0.9 35 79 67 v7802-500 12 4.75~28 2.5 500 1.25 35 85 73 V7803-500 24 4.75~28 3.3 500 1.65 35 90 80 v7805-500 24 6.5~32 5.0 500 2.5 35 93 84 v78x6-500 24 8~32 6.5 500 3.25 35 94 87 v7809-500 24 11~32 9.0 500 4.5 35 95 91 v7812-500 24 15~32 12 500 6 35 95 92 v7815-500 24 18~32 15 500 7.5 35 96 93 notes: 1. ripple and noise are measured at 20 mhz bw v78 xx - 500 output voltage output current base number
for more information, please visit the product page. ?????????????????? cui .com cui inc series: v78-500 description: non-isolated switching regulator date 11/08/2012 page 2 of 6 input parameter conditions/description min typ max units operating input voltage 1.5 v output 1.8 v output 2.5 v output 3.3 v output 5 v output 6 v output 9 v output 12 v output 15 v output 4.75 4.75 4.75 4.75 6.5 8 11 15 18 12 12 12 24 24 24 24 24 24 26 28 28 28 32 32 32 32 32 vdc vdc vdc vdc vdc vdc vdc vdc vdc output parameter conditions/description min typ max units line regulation vin = min ~ max, at full load 1.5~2.5 v models 3.3~15 v models 0.5 0.2 1.0 0.4 % % load regulation measured from 10% load to full load 1.5~2.5 v models 3.3~15 v models 0.4 0.4 0.75 0.6 % % voltage accuracy 100% load 2 3 % switching frequency 100% load, input voltage range 280 330 450 khz temperature coef cient 0.02 %/c protections parameter conditions/description min typ max units short circuit protection continuous, automatic recovery thermal shutdown internal ic junction 150 c safety and compliance parameter conditions/description min typ max units mtbf 2,000,000 hours rohs compliant yes environmental parameter conditions/description min typ max units operating temperature -40 85 c storage temperature -55 125 c case temperature 100 c storage humidity non-condensing 95 % temperature rise at full load 25 c lead temperature 1.5 mm from case for 10 seconds 300 c
for more information, please visit the product page. ?????????????????? cui .com cui inc series: v78-500 description: non-isolated switching regulator date 11/08/2012 page 3 of 6 mechanical parameter conditions/description min typ max units dimensions 0.689 x 0.354 x 0.453 (11.50 x 9.00 x 17.50 mm) inch case material plastic (ul94-v0) weight 2.0 g > @ > @ > @ > @ > @ > @ > @ > @ > @ > @ > @ > @ > @ > @ front view bott om view side view mechanical drawing pin connections pin function 1 +vin 2 gnd 3+vo units: mm [inches] tolerance: 0.25 [0.010] pin section tolerance: 0.10 mm [0.004] 100 80 60 40 20 ambient temperature (c) load (%) -40 -20 0 20 40 60 71 85 100 120 derating curves 1. output power vs. ambient temperature
for more information, please visit the product page. ?????????????????? cui .com cui inc series: v78-500 description: non-isolated switching regulator date 11/08/2012 page 4 of 6 typical application circuit test circuit + +vin gnd +vout 0v dc power source - current meter voltage meter cin dc/dc converter cout twisted 30cm, 18awg a b c01 c02 aaa bb b + - + current meter voltage meter electronic load 20mhz oscilloscope 1. cin = 10 f / 50v for 500ma and 22 f / 50v for 1a, cout = 100 f / 16v. 2. c01 = 10 f / 50v electrolytic, c02 = 0.1 f / 50v ceramic. 3. all points labeled a refer to one junction. 4. all points labeled b refer to one junction. 5. use a short ground loop for probing. do not use a wired ground clip. 1. c1 and c2 are required and should be tted close to the converter pins 2. for the capatance of c1 and c2, see the external capacitor table. low esr types should be chosen 3. c3: a low esr capacitor is required to keep the noise at the converter to a minimum. ceramic capacitors are preffered, but t antalum of low esr electrolytic capacitors may also suf ce; general use 10 f/50v ceramic capacitor. c4 optional, general use 100 f/25v electrolytic capacitor. 4. no parallel connection or plug and play
for more information, please visit the product page. ?????????????????? cui .com cui inc series: v78-500 description: non-isolated switching regulator date 11/08/2012 page 5 of 6 50 55 60 65 70 75 80 85 90 95 100 10 20 30 32 vin(v) 0 10 20 30 40 50 10 20 30 32 vin(v) 60 65 70 75 80 85 90 95 100 100 200 300 400 500 600 0 10 20 30 40 50 100 200 300 400 500 600 20 30 40 50 60 70 80 90 100 100 200 300 400 500 600 0 10 20 30 40 50 100 200 300 400 500 600 V7803-500 v7805-500 v7806-500 v7809-500 v7812-500 v7815-500 V7803-500 v7805-500 v7806-500 v7809-500 v7812-500 v7815-500 V7803-500 v7805-500 v7806-500 v7809-500 v7812-500 v7815-500 V7803-500 v7805-500 v7806-500 v7809-500 v7812-500 v7815-500 efficiency output ripple efficiency (%) efficiency (%) efficiency vs. load (vin=vin_min) output current(ma) efficiency vs. load (vin=vin_max) output current (ma) efficiency (%) ripple vs. vin ( full load) ripple (mvpp) ripple vs. load (vin=vin_min) output current (ma) ripple (mvpp) efficiency vs. vin (full load) ripple vs. load (vin=24v) output current (ma) ripple (mvpp) V7803-500 v7805-500 v7806-500 v7809-500 v7812-500 v7815-500 V7803-500 v7805-500 v7806-500 v7809-500 v7812-500 v7815-500 efficiency and ripple
for more information, please visit the product page. ????????? cui inc series: v78-500 description: non-isolated switching regulator date 11/08/2012 page 6 of 6 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 07/13/2010 1.01 new template applied 04/18/2012 1.02 v-in nity branding removed 09/04/2012 1.03 updated typical application circuits 09/25/2012 1.04 updated external capacitor values 11/08/2012 the revision history provided is for informational purposes only and is believed to be accurate. revision history external capacitor table part c1,c3 c2,c4 number (ceramic capacitor) (ceramic capacitor) v7801-500 10 f/50v 22 f/6.3v v78x2-500 10 f/50v 22 f/6.3v v7802-500 10 f/50v 22 f/6.3v V7803-500 10 f/50v 22 f/6.3v v7805-500 10 f/50v 22 f/10v v78x6-500 10 f/50v 10 f/10v v7809-500 10 f/50v 10 f/16v v7812-500 10 f/50v 10 f/25v v7815-500 10 f/50v 10 f/25v
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