FA5331P(M)/FA5332P(M)

1

s Description

FA5331P(M) and FA5332P(M) are control ICs for a power

factor correction system. These ICs use the average current

control system to ensure stable operation. With this system, a

power factor of 99% or better can be achieved.

FA5331P(M) is a 1st generation IC and FA5332P(M) is 2nd

generation IC which light-load characteristics are improved.

s Features

• Drive circuit for connecting a power MOS-FET(Io=

±1.5A)

• Pulse-by-pulse overcurrent and overvoltage limiting function

• Output ON/OFF control function by external signals

• External synchronizing signal terminal for synchronous

operation with other circuits

• Undervoltage malfunction prevention function

• Low standby current (90

µA typical) for simple start-up circuit

• 16-pin package (DIP/SOP)

•

±2% accuracy reference voltage for setting DC output and

overvoltage protection [FA5332P(M) only]

• When there is a possibility of light-load operation,

FA5332P(M) is suitable.

s Block diagram

FA5331P(M)/FA5332P(M)

s Dimensions, mm

SOP-16

1

10.06

8

9

16

0.7

DIP-16

FA5331P

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 Power Factor Correction

FA5332P

1

16

9

8

19.2

7.62

1.3

0.71

0~15˚

0~15˚

0.25

+0.1

–0.05

Pin

Pin

Description

No.

symbol

1

IFB

Current error amplifier output

2

IIN–

Inverting input to current error amplifier

3

VDET

Multiplier input

4

OVP

Overvoltage protection input

5

VFB

Voltage error amplifier output

6

VIN–

Inverting input to voltage error amplifier

7

GND

Ground

8

OUT

Output

9

VC

Power supply to output circuit

10

VCC

Power supply

11

CS

Soft-start

12

ON/OFF

Output ON/OFF control input

13

REF

Reference voltage

14

SYNC

Oscillator synchronization input

15

CT

Oscillator timing capacitor and resistor

16

IDET

Non-inverting input to current error amplifier