PAM2421/ PAM2422/ PAM2423

Document number: DS36383 Rev. 2 - 2

2 of 10

www.diodes.com

January 2016

© Diodes Incorporated

PAM2421/ PAM2422/ PAM2423

Pin Descriptions

Pin

Number

SO-8EP

Pin Name

Function

1

PGND

Power Ground

2

VIN

Supply Input

3

EN

Enable Control. Connect to a logic high level to enable the IC. Connect to a logic low level to disable the IC.

When unused, connect EN pin to IN (do not leave pin floating).

4

COMP

Error Amplifier Compensation Node

5

AGND

Analog Ground

6

FB

Feedback Input.Connect this pin a resistor divider from the output to set the output

voltage. FB is regulated to 1.262V.

7

SS

Soft Start Control Input. Connect a capacitor from this pin to Ground to set soft-start

timing duration. SS is discharged to ground in shutdown. SS may be left unconnected if

soft start is not desired.

8

SW

Switch Output. Connect this pin to the inductor and the schottky diode. To minimize EMI, minimize the PCB

trace path between this pin and the input bypass capacitor.

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Functional Block Diagram

mA