KA34063 데이터 시트보기 (PDF) - Fairchild Semiconductor

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KA34063

SMPS Controller

Fairchild Semiconductor 

KA34063A

SMPS Controller

www.fairchildsemi.com

Features

• Operation From 3.0 to 40V Input

• Short Circuit Current Limiting

• Low Stand-by Current

• Output Switch Current of 1.5A Without External

Transistors

• Output Voltage Adjustable

• Frequency of Operation From 100Hz to 100kHz

• Step-up, Step-Down or Inverting Switching Regulators

Description

The KA34063A is a monolithic regulator sub system

intended for use as DC to DC converter. This device

contains a temperature compensated bandgap reference, a

duty cycle control oscillator, a driver, and a high current

output switch. It can be used for step down, step up or

inverting switching regulators as well as for series pass

regulators.

8-DIP

1

8-SOP

1

Internal Block Diagram

1.25V

REF

VTG

COMP

5

COMPARATOR

INVERTING

INPUT

4

IPK SENSE 7

GND

TIMING

3

CAPACITOR

* VCC(6)

OSCILLATOR

DRIVE

SWITCH

COLLECTOR COLLECTOR

81

S

Q

Q2

Q1

RD

R

2

©2002 Fairchild Semiconductor Corporation

Rev. 1.0.1

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