AP3441/L

Document number: DS39754 Rev. 1 - 2

2 of 15

www.diodes.com

March 2018

© Diodes Incorporated

AP3441/L

Typical Applications Circuit

R1

R2

VIN

EN

LX

FB

L1 2.2

mH

22

mF

SGND

22

mFx2

OFF

ON

C1

22pF

200k

Ω

100k

Ω

PG

PGND

Pin Descriptions

Pin Number

Pin Name

Function

1

FB

Feedback voltage to internal error amplifier, the threshold voltage is 0.6V.

2

PG

Power good indicator, open drain output. PG is pulled up to VIN when the output voltage is

within 20% of the regulation level, otherwise it is low.

3

VIN

Bias supply. Chip main power supply pin

4

PGND

Power ground pin

5

NC

No connection

6

LX

The drains of the internal main and synchronous power MOSFET.

7

EN

Enable control input. Force this pin voltage above 1.5V enables the chip, and below 0.4V

shuts down the device.

8

SGND

Signal ground pin