P2680

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 5

www.unisonic.com.tw

QW-R502-A32.b



MARKING INFORMATION

PACKAGE

MARKING

HSOP-8



PIN CONFIGURATION

1

2

3

4

8

7

6

5

BST

SW

GND

FB

COMP

EN

SS

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PIN DESCRIPTION

PIN NO.

PIN NAME

DESCRIPTION

1

BST

Bootstrap pin. Positive supply for the upper MOSFET driver.

2

Power supply pin.

3

SW

Power switch output pin.

4

GND

Ground pin.

5

FB

The output voltage feedback pin. It is also the inverting input of the error amplifier.

6

COMP

Compensation pin. It is also the output of the internal error amplifier.

7

EN

Enable Input. A high input at EN turns on the converter, and a low input turns it off.

8

SS

Soft-Start pin. Connect a capacitor from SS to GND to set the soft-start period. To

disable the soft-start feature, leave SS unconnected.