cui .com date 09/06/2012 page 1 of 6 series: v78xx-2000 description: non-isolated switching regulator date 09/06/2012 page 1 of 6 features ? 2 a current output ? extremely high efficiency up to 92% ? 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 (%) v7802-2000 12 4.75~18 2.5 2,000 5 45 85 83 V7803-2000 12 4.75~18 3.3 2,000 6.6 45 87 86 v7805-2000 12 6.5~18 5 2,000 10 45 91 88 v7806-2000 12 8~18 6.5 2,000 13 45 92 91 notes: 1. ripple and noise are measured at 20 mhz bw v78 xx - 2000 x output voltage output current base number "blank" = straight pins r = 90 pins
cui .com cui inc series: v78xx-2000 description: non-isolated switching regulator date 09/06/2012 page 2 of 6 input parameter conditions/description min typ max units operating input voltage 2.5 and 3.3 v outputs 5 v output 6.5 v output 4.75 7 8.5 12 12 12 18 18 18 vdc vdc vdc output parameter conditions/description min typ max units line regulation vin = min ~ max, at full load 0.5 0.75 % load regulation measured from 10% load to full load 0.5 1.0 % voltage accuracy 100% load 2 3 % switching frequency 100% load, input voltage range 300 340 380 khz temperature coef cient 0.03 %/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 emi/emc en 55022 class b, en 61000-4-2 level 3 6kv / 8kv perf. criteria b 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
cui .com cui inc series: v78xx-2000 description: non-isolated switching regulator date 09/06/2012 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 4.0 g (bottom view) 0.30 [0.012] 0.50 [0.020] 4.10 [0.161] 17.50 [0.689] 0.50 [0.020] 2.15 [0.085] 5.08 [0.200] 12 3 9.00 [0.354] 2.15 [0.085] 4.10[0.161] 9.00 [0.354] v78xx-2000r 11.50[0.453] 17.50 [0.689] 0.50 [0.020] 5.08 [0.200] 11.50[0.453] 1.50 [0.059] 123 v78xx-2000 (bottom view) 2.54 [0.100] 1.00 [0.039] 12 3 2.54 [0.100] 2 . 15 [0. 08 5] 5.08 [0.200] 1.00 [0.039] 5 .0 8[0 . 200] 1.35 [0.053] 1 2 3 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
cui .com cui inc series: v78xx-2000 description: non-isolated switching regulator date 09/06/2012 page 4 of 6 external capacitor table typical application circuit part number c1 (ceramic capacitor) c2 (ceramic capacitor) v7802-2000 10 f/25v 22 f/6.3v V7803-2000 10 f/25v 22 f/6.3v v7805-2000 10 f/25v 22 f/16v v7806-2000 10 f/25v 22 f/16v v78xx-2000 v78xx-2000 v78xx-2000 positive and negative outputs positive output negative output v78xx-2000 1 2 3 vin gnd +vout c2 c1 1 2 3 +vin gnd -vout c2 c1 gnd gnd note: 1. c1 and c2 are required and should be fitted close to the converter pins. 2. the capacitance of c1and c2 sees external capacitor table, it can be increased properly if required, and tantalum or low esr electrolytic capacitors may also suffice. 3. no parallel connection or plug and play. 1 2 3 +vin gnd -vout c2 gnd 1 2 3 +vout c1 c3 c4 input filter circuit output filter circuit vin gnd 10uf 10uh-47u h 10uf vin vo gnd vout gnd vin gnd 10uf 10uh-47uh 22uf vin vo gnd 10uf r l
cui .com cui inc series: v78xx-2000 description: non-isolated switching regulator date 09/06/2012 page 5 of 6 emc recommended circuit test configuration vin gnd 2.2uf 1mh 1uf vin vo gnd 1mh 330uf vout gnd efficiency and output voltage ripple test scope ceramic 3 vin gnd +vout c2 c1 25.4m m 1 2.54 mm dc/dc converter 2 25.4mm 12.7mm 1f 10 f tantalum copper strip copper strip load start-up and load transient response test 3 vin gnd +vout c2 c1 50.8 mm 1 2 . 5 4m m dc/dc converter 2 scope copper strip load copper strip efficiency and ripple curves efficiency ripple efficiency vs. input voltage (full load) 60 65 70 75 80 85 90 95 100 4.75 5 6 6.5 7.2 8 9 10 12 15 18 20 input voltage(v) effici en cy (% ) v7802-2000 V7803-2000 v7805-2000 v7806-2000 ripple vs. load(vin=nominal) 2 7 12 17 22 27 32 37 200 400 600 800 1000 1200 1400 1600 1800 2000 load(ma) ripple(mv) v7802-2000 V7803-2000 v7805-2000 v7806-2000 ripple vs. input voltage(full load) 2 6 10 14 18 22 26 30 34 4.75 5 6 6.5 7.2 8 9 10 12 15 18 20 input voltage(v) ripple( m v) v7802-2000 V7803-2000 v7805-2000 v7806-2000 efficiency vs. load(vin=nominal) 50 60 70 80 90 100 200 400 600 800 1000 1200 1400 1600 1800 2000 load(ma) eff ic ienc y ( % ) v7802-2000 V7803-2000 v7805-2000 v7806-200 0
cui inc series: v78xx-2000 description: non-isolated switching regulator date 09/06/2012 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 06/17/2010 1.01 v-in nity branding removed 09/06/2012 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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