MC34063AD View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

MC34063AD

DC-DC Converter Control Circuits

Unspecified 

DC-DC Converter Control Circuits

MC34063A

● OUTPUT SWITCH CURRENT IN EXCESS OF

1.5A

● 2% REFERENCE ACCURACY

● LOW QUIESCENT CURRENT:2.5mA(TYP.)

● OPERATING FROM 3V TO 40V

● REQUENCY OPERATION TO 100KHz

● ACTIVE CURRENT LIMITING

DESCRIPTION

The MC34063A series is a monolithic control

circuit delivering the main functions for DC-DC

voltage converting.

The device contains an intermal temperature

compensated reference, comparator, duty cycle

controlled oscillator with an active current limit

circuit driver and high current output switch.

Output voltage is adjustable through two external

resistors with a 2% reference accuracy.

Employing a minimum number of external

components the MC34063A devices series is

designed for Step-Down, Step-Up and

Voltage-lnverting applications.

8 SOP/ 8 DIP PIN Configulation

Switch

Collector

1

Switch

Emitter 2

8

Drive

Collector

7 Ipk Sense

Timing

Capacitor

3

Ground 4

6 Vcc

5

Comparator

- Input

ORDERING INFORMATION

Device

Package

MC34063AD

8 SOP

MC34063AN

8 DIP

BLOCK DIAGRAM

Drive

Collector

8

sQ

R

Switch

Q2

1 Collector

Q1

Ipk Sense 7

Vcc 6

Comparator

lnverting

5

input

Ipk Oscillator

Comparator

+

-

1.25V

Reference

Regulator

2

Switch

Emitter

3

Timing

Capacitor

4 GND

HTC

1

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