AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

AP1609 Rev. 2

2 of 9

FEBRUARY 2009

www.diodes.com

Pin Assignments

1

2

3

4

8

7

6

5

CE

LX

FB

LX

Vcc

GND

GND

PGND

( Top View )

SOP-8L

Pin Descriptions

Pin Name

Pin Number

Description

CE

1

Chip Enable:

H: Enable

L: Disable

Vcc

2

IC signal power supply pin

FB

3

Feedback pin

PGND

4

Power MOSFET GND

LX

5, 6

Switch Pin. Connect external inductor/diode here. Minimize

trace area at this pin to reduce EMI.

GND

7, 8

GND Pin