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Description
The KA34063A is a monolithic regulator sub system
intended for use as DC to DC converter. This device
contains a temperature compensated bandgap reference, a
duty cycle control oscillator, a driver, and a high current
output switch. It can be used for step down, step up or
inverting switching regulators as well as for series pass
regulators.
8-DIP
1
8-SOP
1
Internal Block Diagram
DRIVE
COLLECTOR
SWITCH
COLLECTOR
8
1.25V
REF
VTG
COMP
S
Q
COMPARATOR
INVERTING
INPUT
Q2
1
5
Q1
4
I
PK
SENSE
GND
TIMING
CAPACITOR
7
OSCILLATOR
R
RD
3
2
* V
CC
(6)
Rev. 1.0.1
漏2002 Fairchild Semiconductor Corporation