FA7630CP 데이터 시트보기 (PDF) - Fuji Electric

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FA7630CP

Bipolar IC For Switching Power Supply Control

Fuji Electric 

FFAA76370C6P(3E) 0CP(E)

Bipolar IC

For Switching Power Supply Control

s Description

The FA7630CP(E) is dual channel PWM-type switching power

supply control IC.

This IC can drive Pch-MOSFET directly and is optimum for

large power DC-DC converter.

This IC has all the necessary protection functions for a power

MOSFET. It is optimum for a portable equipment power

supply which uses low-voltage input to output comparably

large power.

s Features

• Dual channel PWM-type switching power supply control

• ±2.6% (VREF) and ±3% (VB) reference voltage

• Low voltage operation (Vcc: 5 to 20V)

• Drive circuit for connecting a Pch-MOSFET

• Overload cutoff circuit with timer latch circuit

• Soft start circuit

• Undervoltage lockout function (UVLO)

• Pulse-by-pulse overcurrent limiting function

• Output ON/OFF control function for each channel

• Master-slave synchronized operation without external

components

• Maximum operating frequency is 500kHz

s Dimensions, mm

SSOP-20

20

11

1

10

7.2

0.3

0.65

DIP-20

20

0.6

11

s Block diagram

1

1

24.4

0.77

10

1.52

2.54±0.25

0.46±0.1

7.62

0~15˚

0.25+–00..105

0~15˚

Pin Pin

No. symbol

Description

1 CT

Oscillator timing capacitor

2 RT

Oscillator timing resistor

3 ON/OFF2 Output ON/OFF control 2

4 IN2+

Non-inverting input to error

amplifier

5 IN2–

Inverting input to error amplifier

6 FB2

Error amplifier output

7 DT2

Dead time adjustment

8 OCL2

Overcurrent limiting circuit 2

9 GND

Ground

10 OUT2

CH.2 output

11 OUT1

CH.1 output

12 VCC

Power supply

13 OCL1

Overcurrent limiting circuit

14 DT1

Dead time adjustment

15 FB1

Error amplifier output

16 IN1+

Non-inverting input to error

amplifier

17 ON/OFF1 Output ON/OFF control 1

18 SYNC IN Synchronizing signal input

19 CP

Timer and latch circuit

20 REF

Reference voltage output

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