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CUI Inc

│ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR

date 04/22/2013

│ page 4 of 7

EXTERNAL CAPACITOR TABLE

Part Number

C1,C3 (Ceramic capacitor)

C2,C4 (Ceramic capacitor)

V7803-1000(R)

10μF/50V

22μF/6.3V

V7805-1000(R)

10μF/50V

22μF/10V

V7806-1000(R)

10μF/50V

10μF/10V

V7809-1000(R)

10μF/50V

10μF/16V

V7812-1000(R)

10μF/50V

10μF/25V

V7815-1000(R)

10μF/50V

10μF/25V

TYPICAL APPLICATION CIRCUIT

APPLICATION EXAMPLE

V78XX-1000(R)

V78XX-1000(R)

1

2

3

+Vin

GND

-Vout

C2

GND

1

2

3

+Vout

C3

C4

1. C1 and C2 are required and should be fitted close to the converter

pins.

2. The capacitance of C1,C2, C3 and C4 sees external capacitor

table, it can be increased properlyif required,and tantalum or low

ESR electrolytic capacitors may also suffice.

3. No parallel connectionorplug and play.

C1

V78XX-1000(R)

V78XX-1000(R)

1

2

3

Vin

GND

+Vout

C2

C1

1

2

3

+Vin

GND

-Vout

C2

C1

GND

OUTPUT RIPPLE REDUCTION

3

Vin

GND

+Vout

1

DC/DC

Converter

C1

22 F

2

C2

L

To reduce output ripple, it is recommended to add a LC filter in output port.

L: Recommended parameter 10 H~ 47 H.