cui .com date 11/23/2011 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 ef ciency level 2 range (vdc) (vdc) (ma) max (w) max (mvp-p) typ (%) v7802-1000-smt 5 ~ 18 2.5 1,000 2.5 35 82 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 92 notes: 1. 20 mhz bandwidth 2. measured at vin min. and 100% load date 11/23/2011 page 1 of 6 features ? 1 a current output ? high efficiency up to 92% ? 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 - xxxx -smt output voltage base number output current
cui .com date 11/23/2011 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 2.5, 3.3 v models 5.0 v model 6.5 v model 5.0 7.0 8.5 12 12 12 18 18 18 vdc vdc vdc input lter 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 output parameter conditions/description min typ max units 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 2.5 v model 3.3 v model 5.0 v model 6.5 v models, xed output 1.5 1.8 2.5 3.9 5.5 6.5 vdc vdc vdc switching frequency pwm type 1.4 mhz temperature coef cient -40c ~ +85c ambient 0.02 %/c quiescent current 13ma max capacitance load 1,000 f notes: 1. output voltage adjustment must meet vin-vo > 2v requirement, see adjustment resistor values on page 4. protections parameter conditions/description min typ max units short circuit protection continuous, automatic recovery (hiccup mode) 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 emi/emc en55022, class a and class b (refer to page 4), iec/en 61000-4-2 criteria b, iec/en 61000-4-4 criteria b, iec/en 61000-4-5 criteria b (refer to page 4) rohs compliant yes mtbf 25c (mil-hdbk-217k) 1,000,000 hours environmental parameter conditions/description min typ max units case operating temperature 100 c operating temperature power derating above 71c -40 85 c storage temperature -55 125 c storage humidity 95 %
cui .com date 11/23/2011 page 3 of 6 cui inc series: v78-1000-smt description: non-isolated switching regulator 2.54 0.100 10.16 0.400 5 max 12.10 0.476 10 9 6 7 5 1 7.00 0.276 7.25 0.285 15.24 0.600 a 8.50 0.335 detail a scale 10 : 1 1.13 0.044 0.25 0.010 mechanical drawing mechanical parameter conditions/description min typ max units dimensions 15.24 x 8.50 x 7.25 mm (0.600 x 0.335 x 0.285 inch) case material plastic (ul94-v0) weight 2.3 g units: mm [in] pin tolerance: 0.10 mm [0.004 in] general tolerance: 0.25 mm [0.010 in] recommended footprint 10 9 7 6 1 5 11.02 [0.434] 2.54 [0.100] 1.80 [0.071] 2.54 [0.100] 1.00 [0.039] pin connections 1 +vin 7,9 gnd 5 +vout 6 vadj 10 on/off
cui .com date 11/23/2011 page 4 of 6 cui inc series: v78-1000-smt description: non-isolated switching regulator typical application circuit reflow soldering profile application example derating curve 0 20 40 60 80 100 120 -40 0 40 85 120 71 safe operating area operating temperature (c) output power (%) v7805-1000-smt 1 7,9 5 vin gnd vout c2 c1 6 10 on/off r1 r2 gnd 470pf c4 7,9 5 vin gn d +vout 1 c1 22 f 6 c4 470pf lo ad l c2 dc/dc converter 0 50 100 150 200 250 90 max (>220 c) sec 220 c 10 m ax sec peak.temp 240 c temperature (c) time (seconds) 1. c1 and c2 are required for best performance and should be tted 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 suf ce. 3. no parallel connection or plug and play. to reduce output ripple, it is recommended to add a lc lter to the output port. l: recommended parameter 10 ~ 47 h. external capacitor table model c1 (ceramic) c2 (ceramic) 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
cui .com date 11/23/2011 page 5 of 6 cui inc series: v78-1000-smt description: non-isolated switching regulator emc recommended circuit v7805-1000-smt 1 7,9 5 +vin gnd c1 6 10 on/off 470pf c2 tvs l1 rl +vo gnd 1 7,9 5 +vo gnd c3 6 10 on/off 470pf c4 rl l2 gnd +vin v7805-1000-smt tvs: smcj18a, 1500w l1: 68 h c1: 680 f / 50 v electrolytic capacitors l2: 516 h c3: 1 f / 50 v ceramic capacitor adjustment resistor values model v7802 v7803 v7805 vo (nominal) 2.5 v 3.3 v 5.0 v vadj (v) r1 (k ) r2 (k ) r1 (k ) r2 (k ) r1 (k ) r2 (k ) 1.5 51.1 - - - - - 1.8 104.3 - 15.4 - - - 2.5 - - 87 - 9.7 - 3.0 - 88.7 339 - 30.5 - 3.3 - 41.3 - - 48.8 - 3.6 - 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 ca pacitor to gnd with 470pf typical value for increase immunity. insure the output voltage is in the adjust range or else may cause permanen t damage to the device. fine-tune output voltage must appease vin-vo>2v.
date 11/23/2011 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 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 11/23/2011 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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