@vic AV34063

Copyright © Avic Electronics Corp. 1 Website: http://www.avictek.com

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
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.

FEATURES
null Operation from 3.0 to 40V input
null Low standby current
null Current limiting
null Output switch current of 1.5A
null Output voltage adjustable
null Frequency of operation from 100Hz to 100KHz
null Precision 2% reference


BLOCK DIAGRAM







ORDERING INFORMATION

Part Number
Operating Temperature Range Package Type
AV34063 0℃~+70℃ DIP-8
AV34063S 0℃~+70℃ SOP-8





DIP-8
SOP-8
1
2
3
4 5
6
7
8
1
2
3
4 5
6
7
8
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
Comparator
Inverting
Input
V
CC

I
PK

Sense
Drive
Collector
(Bottom View)
(Top View)
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
Comparator
Inverting
Input
V
CC

I
PK

Sense
Drive
Collector
S Q
R
Q2
Q1
100
C
T

I
PK
Oscillalo
Comparator
1.25
Reference
Regulator