FA5301BP(N)

1

FA5301BP(N)

s Description

The FA5301BP(N) is a bipolar IC containing basic circuits

necessary for PWM-type switching power supply control.

This IC switches an external transistor according to external

synchronizing pulses.

s Features

• External synchronization input terminal

• Open-collector output

• Soft-start from standby mode

• Double protection of output transistor by overcurrent limiting

and cutoff functions

• Output ON/OFF control function

• Not many external discrete components needed

s Applications

• Switching power supply for general equipment

(Optimum for TV, display, and other monitor devices)

s Dimensions, mm

SOP-16

DIP-16

s Block diagram

1

16

9

8

19.4

7.6

1.5

0.81

0~15˚

0~15˚

0.3

+0.1

–0.05

Bipolar IC

For Switching Power Supply Control

1

8

9

16

0.65

0.33

Pin

Pin

Description

No.

symbol

1

IN (–)

Inverting input to error amplifier

2

IN (+)

Non-inverting input to error

amplifier

3

ER.OUT

Error amplifier output

4

FB

Feedback input

5

IS

Overcurrent detection

6

CD

Overcurrent cutoff delay

capacitor

7

GND

Ground

8

ON/OFF

Output ON/OFF control

9

OUT

Output

10

DT

Dead time adjustment

11

CT

Oscillator timing capacitor

12

CSY

External synchronizing signal

detection capacitor

13

SYNC

External synchronization input

14

CSO

PWM soft-start capacitor

15

REF

Reference voltage output (5V)

16

VCC

Power supply