Datasheet

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CUI Inc │ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 08/27/2014 │ page 4 of 7
EXTERNAL CAPACITOR TABLE
Part Number C1
2
(Ceramic capacitor) C2 (Ceramic capacitor)
V7803-1000(R) 10μF/50V 22μF/6.3V
V7805-1000(R) 10μF/50V 22μF/16V
V7806-1000(R) 10μF/50V 10μF/16V
V7809-1000(R) 10μF/50V 10μF/16V
V7812-1000(R) 10μF/50V 10μF/25V
V7815-1000(R) 10μF/50V 10μF/25V
V78XX-1000(R)
1
2
3
Vin
GND
+Vout
C2
C1
OUTPUT RIPPLE REDUCTION
3
Vin
GND
+Vout
1
DC/DC
Converter
C1
22 F
2
C2
Load
L
To reduce output ripple, it is recommended to add a LC filter in output port.
L: Recommended parameter 10 H~47 H.
TYPICAL APPLICATION CIRCUIT
Notes: 1. C1 and C2 are required and should be tted close to the converter pins.
2. If the input voltage is greater than 26 Vdc (3.3 Vdc output model) or greater than 28 Vdc (all other models), it is required to have C1 be ≥ 22 µF electrolytic capacitor to
protect the part from voltage spikes.
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