Datasheet

ManualsBrandsCUI INC ManualsPSU ComponentsDC/DC converter (SMD) 3.3 V 500 mA 1.65 W No. of outputs: 1 x

cui.com

date 01/26/2016

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SERIES: V78-500-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR

MODEL

input

voltage

output

voltage

output

current

output

power

ripple and

noise

efciency

typ

(Vdc)

range

(Vdc) (Vdc) (mA)

max

(W)

max

(mVp-p)

Vin min

(%)

Vin max

(%)

V7803-500-SMT

4.5 ~ 28 3.3 500 1.65 25 90 75

V7805-500-SMT 12 6 ~ 28 5 500 2.5 25 94 81

V7812-500-SMT

24 14 ~ 28 12 500 6 25 95 90

V7815-500-SMT

24 17 ~ 28 15 500 7.5 25 96 92

Notes: 1. ripple & noise are measured at 20 MHz BW with 1 µF ceramic cap and 10 µF electrolytic capacitors on the output

2. must operate with a minimum of 5% loading

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FEATURES

• 500 mA current output

• high efficiency up to 96%

• no heat sink required

• SMT package

• remote on/off control

• low ripple and noise

• short circuit protection, thermal shutdown

• wide temperature (-40°C~+85°C)

RoHS

PART NUMBER KEY

V78 XX - XXX -SMT- X

Output VoltageBase Number Output Current Package Options

"blank" = standard

TR = Tape & Reel

For more information, please visit the product page.

Summary of content (8 pages)

PAGE 1
For more information, please visit the product page.
PAGE 2
For more information, please visit the product page. CUI Inc │ SERIES: V78-500-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 01/26/2016 │ page 2 of 8 INPUT parameter conditions/description min typ max units input voltage 3.3 Vdc output 5 Vdc output 12 Vdc output 15Vdc output 4.5 6 14 17 12 12 24 24 28 28 28 28 Vdc Vdc Vdc Vdc 1.1 1.25 1.4 Vdc remote on/off shutdown threshold voltage on/off control current on: off: open or 1.
PAGE 3
For more information, please visit the product page. CUI Inc │ SERIES: V78-500-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 01/26/2016 │ page 3 of 8 DERATING CURVES Load (%) 100 80 60 40 20 -40 -20 0 20 40 60 71 85 100 120 Ambient Temperature (°C) MECHANICAL parameter conditions/description min dimensions 15.24 x 8.30 x 7.25 (0.600 x 0.327 x 0.285 inch) case material plastic (UL94-V0) weight typ units: mm [in] pin tolerance: ±0.10 mm [±0.004 in] general tolerance: ±0.
PAGE 4
For more information, please visit the product page. CUI Inc │ SERIES: V78-500-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 01/26/2016 │ page 4 of 8 PACKAGING DIMENSIONS Taping dimension: ∅1.50 [0.059] 8.20 [0.323] 10.20 [0.402] 10.20[0.402] 6.50 [0.256] 0.50 [0.020] 15.65 [0.616] 14.70 [0.579] 1.75 [0.069] 11.50 [0.453] 2.00 [0.079] 12.40 [0.488] 16.00 [0.630] Taping reel dimension: ∅1.50 [0.059] 7.65 [0.301] 29.40 [1.157] ∅330.00 [12.992] 5.60 [0.220] ∅100.00[3.
PAGE 5
For more information, please visit the product page. CUI Inc │ SERIES: V78-500-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 01/26/2016 │ page 5 of 8 OUTPUT TRIMMING Pa rt Na me Vo nom V7803-500-SMT 3.3 V V7805-500-SMT 5.0 V V7812-500-SMT 12V V7815-500-SMT 15V Trim Down Trim Up R 1(KΩ ) 61 *Vo- 75.1 0 = 3.3-Vo 61*Vo-9 1.52 = 5.0 -Vo 71 *Vo- 287 .02 = 12-Vo R 2(K Ω ) 75.1 0-10 *Vo = Vo -3.3 = 91.5 2-10 *Vo Vo -5.0 28 7.02- 20*Vo = Vo-1 2 = 6 6*Vo -26 9.37 15-Vo = 26 9.
PAGE 6
For more information, please visit the product page.
PAGE 7
For more information, please visit the product page. CUI Inc │ SERIES: V78-500-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 01/26/2016 │ page 7 of 8 SHUTDOWN CONTROL The ON/OFF pin provides several features for adjusting and sequencing the power supply, a user has the flexibility of using the ON/OFF pin as: 1) A digital on/off control by pulling down the ON/OFF pin with an open-drain transistor. ON/OFF 2) Line UVLO.
PAGE 8
For more information, please visit the product page. CUI Inc │ SERIES: V78-500-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 01/26/2016 │ page 8 of 8 REVISION HISTORY rev. description date 1.0 initial release 01/04/2008 1.01 new template applied 04/28/2009 1.02 V-Infinity branding removed 09/06/2012 1.03 added TR package option 10/31/2012 1.04 added minimum loading requirement note 01/30/2013 1.05 updated spec 03/08/2013 1.