UTCMC34063 Datasheet, PDF (1/6 Pages) Unisonic Technologies – DC TO DC CONVERTER CONTROLLER

UTCMC34063 LINEAR INTEGRATED CIRCUIT
DC TO DC CONVERTER
CONTROLLER
DESCRIPTION
The UTC MC34063 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-R103-001,A