@vic
AV34063
1.5A,Step-Up/Down Inverting Switching Regulators
DESCRIPTION
The AV34063 is a monolithic control circuit containing the
primary functions required for DC-to-DC converters. This device
consists of an internal temperature compensated reference,
comparator, controlled duty cycle oscillator with an active current
DIP-8
limit circuit,driver and high current output switch. This device was
specifically designed to be incorporated in Step-Down and Step-Up
and Voltage-inverting applications with a minimum number of
external components.
SOP-8
FEATURES
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Operation from 3.0 to 40V input
Low standby current
Current limiting
Output switch current of 1.5A
Output voltage adjustable
Frequency of operation from 100Hz to 100KHz
Precision 2% reference
BLOCK DIAGRAM
1
8
Drive
Switch
Collector
Collector
R
Q2
Q1
7
2
100
IPK
Switch
Emitter
Sense
IPK
Oscillalo
CT
Drive
Switch
Collector
Switch
8
7
6
1
Collector
6
VCC
IPK
Comparator
Timing
2
4
Emitter
Sense
Capacitor
1.25
Timing
Reference
Regulator
VCC
Capacitor
4
Comparator
Inverting
Input
Gnd
Comparator
Inverting
Input
Gnd
(Top View)
(Bottom View)
ORDERING INFORMATION
Part Number
Operating Temperature Range
0℃~+70℃
Package Type
DIP-8
AV34063
0℃~+70℃
SOP-8
AV34063S
Copyright © Avic Electronics Corp.
1
Website: http://www.avictek.com
AVICTEK [ Avic Technology ]
