MC34063 Datasheet, PDF (1/10 Pages) ON Semiconductor – DC-to-DC Converter Control Circuits

ET- MC34063
DC to DC Converter Controller
‹ Description
The MC34063 is a monolithic switching
regulator control circuit containing the
primary functions required for DC-DC
converters. This devices consists of internal
temperature compensated reference,
voltage comparator, controlled duty cycle
oscillator with active current limit circuit,
driver and high current output switch. The
device is specifically designed to be
incorporated in step-down,step-up and
voltage-inverting applications with a
minimum number of external components.
‹ Block Diagram
‹ Features
¾ Operation from 3.0V to 40V
¾ Low Standby Current.
¾ Current Limiting
¾ Output Switch Current to 1.2A
¾ Output Voltage Adjustable
¾ Operation Frequency up to 180KHz
(CT=100pF)
¾ Precision 2% Reference
‹ Applications
¾ Battery Chargers
¾ ADSL Modems
¾ NICs/Switches/Hubs
¾ Negative Voltage Power Supplies
‹ Pin Description
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Copyright @ Estek Electronics Co., Ltd
Version 0.3
27 Sep 2011