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What is MC34063?

This electronic component, produced by the manufacturer "HOTCHIP", performs the same function as "DC/DC CONVERTER CONTROL CIRCUIT".


MC34063 Datasheet PDF - HOTCHIP

Part Number MC34063
Description DC/DC CONVERTER CONTROL CIRCUIT
Manufacturers HOTCHIP 
Logo HOTCHIP Logo 


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MC34063
DC/DC CONVERTER CONTROL CIRCUIT
Description
The MC34063 is a monolithic
control circuit containing the primary
functions required for DC/DC converters.
The 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
is specifically designed to be incorporated
in stepdown, step-up and voltage-inverting
applications with a minimum number of
external components. The ±2% internal
reference and low quiescent current of
1.6mA are among the improvements of the
device over the competition
Features
3V to 30V Input Voltage Operation.
Internal 1.2A Peak Current Switch.
Internal ±2% Reference.
Low Quiescent Current at 1.6mA.
Frequency Operation from 100Hz to
100KHz.
Low Dropout Operation: 100% Duty
Cycle
Current Limiting.
Standard SOP8/DIP8 Packages
Applications
DC-DC Converter Module
ADSL Modems
Hub.
Battery Chargers
Functional Diagram
Ver1.0
1

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MC34063 equivalent
Application Information
Design Formula Table
MC34063
VSAT = Saturation voltage of the output
switch.
VF = voltage drop of the ringback
rectifier
The following power supply
characteristics must be chosen:
VIN -Nominal input voltage.
VOUT -Desired output voltage,
|VOUT| =1.25 (1 + RB/RA)
lOUT - Desired output current.
FMIN - Minimum desired output switching
frequency at the selected values
for VIN and lOUT
VRIPPLE (P-P) - Desired peak-to-peak output
ripple voltage.In practice, the
calculated value will need to be
increased due to the capacitor
equivalent series resistance and
board layout. The ripple voltage
should be kept to a low value since
it will directly effect the line and
load regulation.
Ver1.0
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MC34063 electronic component.


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1. Converter Control Circuit - Hotchip

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