KA5M0765RQC-TU 查看數據表（PDF） - Fairchild Semiconductor

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KA5M0765RQC-TU

Fairchild Power Switch(FPS)

Fairchild Semiconductor 

KA5M0765RQC

Fairchild Power Switch(FPS)

www.fairchildsemi.com

Features

• Precision fixed operating frequency (70KHz)

• Low start-up current (Typ. 100µA)

• Pulse by pulse current limiting

• Over load protection

• Over current protection

• Over voltage protection (Min. 25V)

• Internal thermal shutdown function

• Under voltage lockout

• Internal high voltage sense FET

• Auto-restart mode

Description

The Fairchild Power Switch(FPS) product family is specially

designed for an off line SMPS with minimal external

components. The Fairchild Power Switch(FPS) consist of high

voltage power SenseFET and current mode PWM IC. Included

PWM controller features integrated fixed frequency oscillator,

under voltage lock-out, leading edge blanking, optimized gate

turn-on/turn-off driver, thermal shutdown protection, over

voltage protection, and temperature compensated precision

current sources for loop compensation and fault protection

circuitry. compared to discrete MOSFET and PWM controller

or RCC solution, a Fairchild Power Switch(FPS) can reduce

total component count, design size, weight and at the same time

increase efficiency, productivity, and system reliability.

It has a basic platform well suited for cost-effective design in

either a flyback converter or a forward converter.

TO-220-5L

1

1. DRAIN 2. GND 3. VCC 4. FB 5. S/S

Internal Block Diagram

Vcc

Drain

3

1

OVP

+

27V -

OVP - ou t

VCC VREF 15V/9V

5uA 1mA

Feedback 4

Soft Start 5

2.5R

+

5V R

7.5V

- OLP

TSD

(TJ =1 50℃)

OVP - ou t

(VCC=27V)

OCL

(VS=1.4V)

UVLO

Vref

CLK

OSC

INTERNAL

BIA S

Good Logic

SQ

-

LEB R

+

VO FF SE T

VOL TAG E

LIMIT Sense

CIRCUIT

FET

14V

VS

Power-on Reset

/Auto-restart

S

Q

R

Shutdown

Lat ch

Rsense

2 GND

※ LEB : Leading Edge Blanking

※ OCL : Over Curr ent Limit

©2001 Fairchild Semiconductor Corporation

Rev.1.0.2

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