P1580

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

2 of 6

www.unisonic.com.tw

QW-R103-049.A

PIN CONFIGURATION

1

BS

2

IN

3

SW

8 SYNC

7 EN

6 COMP

5 FB

GND 4

PIN DESCRIPTION

PIN NO.

PIN NAME

DESCRIPTION

1

BS

Supply pin to the power transistor driver. Tie to external circuit to generate a local supply

voltage higher than the input voltage in order to fully turn on the internal power transistor.

2

IN

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.

(1). A RC network at this pin compensates the control loop.

(2). The voltage at this pin controls the peak current of the internal switch.

7

EN

Regulator On/Off Control pin. Leave EN unconnected if unused. A low input at EN turns

on the converter, and a high input turns it off.

8

SYNC

Synchronization Input - The sync pin is used to synchronize the internal oscillator to an

external signal.