UC3863

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

2 of 10

www.unisonic.com.tw

QW-R103-058.F



MARKING

SOT-26

DIP-8

SOP-8



PIN CONFIGURATION

SOT-26

DIP-8 / SOP-8



PIN DESCRIPTION

PIN NO.

SOT-26

DIP-8

SOP-8

PIN NAME

PIN TYPE

DESCRIPTION

1

8

GND

P

Ground.

2

7

FB

I

Feedback input pin. The PWM duty cycle is determined by

voltage level into this pin and SENSE pin input.

3

5

RI

I

A resistor connected between RI and GND sets switching

frequency.

4

4

SENSE

I

Current sense input pin. Connected to MOSFET current

sensing resistor node.

5

2

P

Power supply.

6

1

GATE

O

The totem-pole output driver for driving the power MOSFET.

-

3, 6

NC

-

No Connection