Copyright

© ANPEC Electronics Corp.

Rev. A.1 - Mar., 2011

APW7176

www.anpec.com.tw

6

PIN

NO.

NAME

FUNCTION

1

EN1

Channel 1 Enable Control Input. Drive EN1 above 1V to turn on the Channel 1. Drive EN1 below 0.4V to

turn it off. In shutdown situation, all functions are disabled to decrease the supply current below 1

µA.

Don’t left this pin floating.

2

FB1

Channel 1 Feedback Input. Connect FB1 to the center point of the external resistor divider. The

feedback voltage is 0.6V.

3

IN2

Channel 2 Supply Input. Bypass to the GND2 with a 4.7

µF or greater ceramic capacitor.

4

GND2

Ground 2. Connected the exposed pad to the GND2.

5

SW2

Channel 2 Power Switch Output. Inductor connection to drains of the internal PMOSFET and NMOSFET

switches.

6

EN2

Channel 2 Enable Control Input. Drive EN2 above 1V to turn on the Channel 2. Drive EN2 below 0.4V to

turn it off. In shutdown situation, all functions are disabled to decrease the supply current below 1

µA.

Don’t left this pin floating.

7

FB2

Channel 2 Feedback Input. Connect FB2 to the center point of the external resistor divider. The

feedback voltage is 0.6V.

8

IN1

Channel 1 Supply Input. Bypass to the GND1 with a 4.7

µF or greater ceramic capacitor.

9

GND1

Ground 1. Connected the exposed pad to the GND1.

10

SW1

Channel 1 Power Switch Output. Inductor connection to drains of the internal PMOSFET and NMOSFET

switches.

Exposed

Pad

NC

No Internal Connection. Connecting this pad to GND1 and GND2.

Pin Description

Block Diagram

Diagram Represents 1/2 of the APW7176

Oscillator

Logic Control

SW1/SW2

Over-

Temperature

Protection

V

REF

0.6V

EAMP

COMP

ICMP

Soft-

start

Current

Limit

IN1/IN2

Shutdown

Control

∑

FB1/FB2

EN1/EN2

GND1/GND2

Gate

Driver