Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com




1.5Amp DC-to-DC Converter Control Circuit

B34063A
























Pin Connection

Ordering Information












SO-8
8-pin
P-DIP
8-pin
Operating
Temp. Range
B34063AM B34063AP 0°C to 70°C
B34063AIM B34063AIP -40°C to 85°C
B34063AEM B34063AEP -40°C to 125°C
All Marking will be B34063X. The Temperature will be specified
in out side Box. X=Package type









2
1
3
4
8
7
6
5
8-Pin Surface Mount
Top View
Switch
Collector
Timing
Capacitor
GND Comparator
Inverting Input
I
PK
Sense
V
CC
Driver
Collector
Switch
Emitter
Description

The Bay Linear B34063A series is monolithic control circuit
containing the primary functions required for DC-to-DC
converters. These devices consist of an internal temperature
compensated reference, comparator, controlled, duty cycle
oscillator with an active current limit circuit, driver and high
current output switch.

This series was specially designed to be incorporated in Step-
Down and Step-Up and voltage-inverting applications with a
minimum number of external component.

The B34063A is offer in 8-pin DIP or Surface mount package.
Features
• Operation from 3.0V to 40V input
• Low Standby Current
• Current Limiting
• Output Switch Current to 1.5A
• Output voltage Adjustable
• Frequency Operation to 100 kHz
• Precision 2% Reference
• Step-Up-Step Down or inverting Switching
regulator
• Direct Replacement for MC34063
Applications
• CD ROM
• Mother Board
• SMPS Power Supply



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