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UTCMC34063A

DC TO DC CONVERTER CONTROLLER

Unisonic Technologies 

UTCMC34063A LINEAR INTEGRATED CIRCUIT

DC TO DC CONVERTER

CONTROLLER

DESCRIPTION

The UTC MC34063A is a monolithic regulator

subsystem, intended for use as DC to DC converter.

This device contains a temperature compensated band

gap reference, a duty-cycle control oscillator, driver

and high current output switch. It can be used for step

down, step-up or inverting switching regulators as well

as for series pass regulators.

FEATURES

*Operation from 3.0V to 40V.

*Short circuit current limiting.

*Low standby current.

*Output switch current of 1.5A without external

transistors.

*Frequency of operation from 100Hz to 100kHz.

*Step-up, step-down or inverting switch regulators.

PIN CONFIGURATION

Switch

Collector

1

Switch

Emitter

2

Timing

Capacitor

3

Gnd

4

Driver

8

Collector

7

Lpk Sense

6

Vcc

Comparator

5

Inverting input

BLOCK DIAGRAM

SWITCH

COLLECTOR

1

SWITCH

EMITTER

2

TIMING

CAPACITOR

3

E

T2

T1

A

S

Q

R

C

Is

CT

OSCILLATOR

GND

4

1.25Vref

COMP.

D

B

8

DRIVE

COLLECTOR

7

Ipeak

SENSE

6 Vcc

5

COMPARATOR

INVERTING INPUT

SOP-8

DIP-8

UTC UNISONIC TECHNOLOGIES CO., LTD.

1

QW-R103-008,A

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