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UTCMC34063 Datasheet

  • UTCMC34063

  • DC TO DC CONVERTER CONTROLLER

  • 6頁

  • UTC-IC

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UTC MC34063 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.
SOP-8
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.
DIP-8
PIN CONFIGURATION
Switch
Collector
Switch
Emitter
Timing
Capacitor
1
8
Driver
Collector
2
7
Lpk Sense
3
6
Vcc
Gnd
4
5
Comparator
Inverting input
BLOCK DIAGRAM
E
SWITCH
COLLECTOR
T2
S
Q
R
T1
SWITCH
EMITTER
D
C
Is
A
TIMING
CAPACITOR
CT
OSCILLATOR
1
8
DRIVE
COLLECTOR
2
7
Ipeak
SENSE
3
6
Vcc
COMP.
GND
4
1.25Vref
B
5
COMPARATOR
INVERTING INPUT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R103-001,A

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