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CUI Inc

│ SERIES: P78-2000-S │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR

date 09/23/2021

│ page 5 of 6

Figure 2

TYPICAL APPLICATION CIRCUIT

Part No.

C1

(ceramic capacitor)

C2

(ceramic capacitor)

P7803-2000-S

22μF/50V

22μF/10V

P7805-2000-S

22μF/50V

22μF/10V

P7809-2000-S

22μF/50V

22μF/16V

P7812-2000-S

22μF/50V

22μF/25V

P7815-2000-S

22μF/50V

22μF/25V

Table 1

Recommended external circuit

components

FUSE

choose according to

practical input current

C0

100μF/100V

LDM1

22μH

C4

680μF/50V

C1/C2

10μF/50V

C3

22μF/25V

Figure 3

EMC RECOMMENDED CIRCUIT

Table 2

Note:

1. C1 and C2 are required and should be connected close to the pin terminal of the module.

2. The capacitance of C1 and C2 refer to Sheet 1.

3.Toreducetheoutputripplefurtherly,C2canbeincreasedproperlyifrequired,tantalumcapacitorandaluminumelectrolyticcapacitoroflowESRmayalsosuffice.

4. Cannot be used in parallel to enlarge the power for output and hot swap.

Note:

Part ① in the Fig. 4 is for EMS test, part ➁isforEMIfiltering;parts① and ➁ can be added based on actual requirement.

Additional Resources: Product Page | 3D Model | PCB Footprint

Additional Resources: Product Page | 3D Model | PCB Footprint