MC34063A

LINEAR INTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD

2 of 9

www.unisonic.com.tw

QW-R103-008.N



PI N CON FI GU RAT I ON

Switch Collector

Switch Emitter

Timing Capacitor

GND

Driver Collector

Comparator Inverting input

1

2

3

4

8

7

5

6



PI N DESCRI PT I ON

PIN NO

PIN NAME

I/O

DESCRIPTION

1

Switch Collector

I

Internal Darlington pairs TI collector

2

Switch Emitter

O

Internal Darlington pairs TI emitter

3

Timing Capacitor

The value of selected capacitor controls the internal oscillator run rate

4

GND

5

Comparator Inverting

Input

I

Inverting input of comparator which can set & initiate the Darlington pairs

output switch

6

7

I

Current sense input to monitor the voltage drop across an external

8

Driver Collector

I

Internal Darlington pairs TI collector



BLOCK DI AGRAM

8

7

5

4

2

1

3

6

Q

S

R

C

E

T1

T2

A

Is

D

B

CT

Vcc

GND

Timing Capacitor

Switch Emitter

Switch Collector

COMP.

OSCILLATOR

Comparator Inverting

Input

Drive Collector