for more information, please visit the product page. ????????? ?????????????????? cui .com date 01/26/2016 page 1 of 6 series : v78-1000-smt description: non-isolated switching regulator model input voltage output voltage output current output power ripple and noise 1 effciency level 2 range (vdc) (vdc) (ma) max (w) max (mvp-p) typ (%) v7801-1000-smt 4.75 ~ 15 1.5 1,000 1.5 35 76 V7801A-1000-SMT 4.75 ~ 15 1.8 1,000 1.8 35 79 v7802-1000-smt 5 ~ 18 2.5 1,000 2.5 35 83 v7803-1000-smt 5 ~ 18 3.3 1,000 3.3 35 84 v7805-1000-smt 7 ~ 18 5.0 1,000 5 35 90 v7806-1000-smt 8.5 ~ 18 6.5 1,000 6.5 35 93 notes: 1. 20 mhz bandwidth 2. measured at vin min. and 100% load date 01/26/2016 page 1 of 6 features ? 1 a current output ? high efficiency up to 93% ? no heat sink required ? smt package ? remote on/off control ? low ripple and noise ? short circuit protection, thermal shutdown ? wide temperature (-40c~+85c) rohs part number key v78 xx - xxx -smt- x output voltage base number output current package options "blank" = standard tr = tape & reel
for more information, please visit the product page. ?????????????????? cui .com date 01/26/2016 page 2 of 6 cui inc series : v78-1000-smt description: non-isolated switching regulator input parameter conditions/description min typ max units operating input voltage 1.5, 1.8 vdc models 2.5, 3.3 vdc models 5.0 vdc model 6.5 vdc model 4.75 5.0 7.0 8.5 12 12 12 12 15 18 18 18 vdc vdc vdc vdc input flter capacitor 10 f remote on/off on: off: open or 1.2 < vc 6 v vc < 0.6 v on/off control current on: off: open or 1.2 < vc 6 v gnd or vc < 0.4 v 100 200 a shutdown input current 120 200 a output parameter conditions/description min typ max units max capacitive load 1,000 f line regulation measured from low line to high line at 100% load 0.2 0.5 % load regulation measured from 10% to full load at nominal input 0.4 1.0 % voltage accuracy measured from low line to high line at 100% load 2 3 % adjustability 1 1.8 vdc model 2.5 vdc model 3.3 vdc model 5.0 vdc model 1.5 1.5 1.8 2.5 3.6 3.9 5.5 6.5 vdc vdc vdc vdc switching frequency pwm type 1.4 mhz temperature coeffcient -40 c ~ +85 c ambient 0.02 %/c notes: 1. output voltage adjustment must meet vin-vo > 2v requirement, see adjustment resistor values on page 4. not availabe on 1.5 or 6.5 vdc output models. protections parameter conditions/description min typ max units short circuit protection hiccup, continuous, automatic recovery thermal shutdown internal ic junction 150 c current limit 1.8 a safety and compliance parameter conditions/description min typ max units thermal resistance 90 c/w conducted emissions cispr22/en55022 class a (without external circuit) cispr22/en55022 class b (external circuit required, see figure 1-b) rediated emissions cispr22/en55022 class a (external circuit required, see figure 1-b) esd iec/en 61000-4-2, class b, contact 6kv/ air 8kv radiated immunity iec/en 61000-4-3, class a, 10v/m eft/burst iec/en 61000-4-4, class b, 2kv (external circuit required, see figure 1-a) surge iec/en 61000-4-5, class b, 2kv (external circuit required, see figure 1-a) conducted immunity iec/en 61000-4-6, class a, 3 vr.ms voltage dips & interruptions iec/en 61000-4-29, class b, 0%-70% mtbf as per mil-hdbk-217f, 25 c 1,000,000 hours rohs 2011/65/eu
for more information, please visit the product page. ?????????????????? cui .com date 01/26/2016 page 3 of 6 cui inc series : v78-1000-smt description: non-isolated switching regulator pin connections 1 +vin 7,9 gnd 5 +vout 6 vadj 10 on/off units: mm [in] pin tolerance: 0.10 mm [0.004 in] general tolerance: 0.25 mm [0.010 in] environmental parameter conditions/description min typ max units case operating temperature 100 c opertaing temperature see derating curve -40 85 c storage temperature -55 125 c storage humidity 95 % hand soldering for 10 seconds 260 c refow soldering refer to ipc/jedec j-std-020d.1 240 c mechanical parameter conditions/description min typ max units dimensions 15.24 x 8.30 x 7.25 (0.600 x 0.327 x 0.285) mm inches case material plastic (ul94-v0) weight 2.3 g mechanical drawing
for more information, please visit the product page. ?????????????????? cui .com date 01/26/2016 page 4 of 6 cui inc series : v78-1000-smt description: non-isolated switching regulator typical application circuit application example derating curve 0 20 40 60 80 10 0 12 0 -40 04 08 51 20 71 sa fe op er at in ga re a oper ating te mper ature (c) output po wer (%) v7805-1000-sm t 1 7, 9 5 vi n gn d vo ut c2 c1 6 10 on /o ff r1 r2 gn d 47 0p f c4 7, 9 5 vi n gn d +v out 1 c1 22 f 6 c4 470p f lo ad l c2 dc /dc converter 1. c1 and c2 are required for best performance and should be ftted close to the converter pins. 2. see the capacitor values for c1 and c2 in the external capacitor table below. these can be increased if required and tantalum or low esr electrolytic capacitors will also suffce. 3. no parallel connection or plug and play. to reduce output ripple, it is recommended to add a lc flter to the output port. l: recommended parameter 10 ~ 47h. external capacitor table model c1 (ceramic) c2 (ceramic) v7801-1000-smt 10 f / 25 v 22 f / 16 v V7801A-1000-SMT 10 f / 25 v 22 f / 16 v v7802-1000-smt 10 f / 25 v 22 f / 16 v v7803-1000-smt 10 f / 25 v 22 f / 16 v v7805-1000-smt 10 f / 25 v 22 f / 16 v v7806-1000-smt 10 f / 25 v 22 f / 16 v
for more information, please visit the product page. ?????????????????? cui .com date 01/26/2016 page 5 of 6 cui inc series : v78-1000-smt description: non-isolated switching regulator emc recommended circuit a b v in gnd fuse mov tv s ldm1 ldm2 c0 c1 eut +v in +v out gnd l oad adjustment resistor values model v7801a-1000 v7802-1000 v7803-1000 v7805-1000 vadj (v) r1 (k?) r2 (k?) r1 (k?) r2 (k?) r1 (k?) r2 (k?) r1 (k?) r2 (k?) 1.5 188.1 - 15.4 - - - - - 1.8 - - 68.6 - 15.4 - - - 2.5 - 81.4 - - 87 - 9.7 - 3.0 - 32.2 - 88.7 339 - 30.5 - 3.3 - 18.6 - 41.3 - - 48.8 - 3.6 - 9.5 - 20.1 - 121 75 - 3.9 - - - 8.0 - 51.0 115 - 4.5 - - - - - 16.6 338 - 4.9 - - - - - 8.0 1,835 - 5.0 - - - - - 6.5 - - 5.1 - - - - - 5.2 - 426 5.5 - - - - - 1.1 - 58.7 6.0 - - - - - - - 16.9 6.5 - - - - - - - 3.2 the r1, r2 in the above table are used to set the output voltage. if no need to adjust the output voltage, connect a ceramic capacitor to gnd with 470pf typical value for increase immunity. insure the output voltage is in the adjust range or else may cause permanent damage to the device. fine-tune output voltage must appease vin-vo>2v. recommended external circuit components fuse choose according to practical input current mov 10d560 ldm1 82h tvs smcj36a c0 120f/50v c1 4.7f/50v ldm2 33h figure 1 table 1
for more information, please visit the product page. ????????? date 01/26/2016 page 6 of 6 cui inc series : v78-1000-smt description: non-isolated switching regulator 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 be 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 11/23/2011 1.01 v-infnity branding removed 09/04/2012 1.02 added tr package option 10/31/2012 1.03 housing width changed, emc recommendations updated 01/26/2016 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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