An Introduction of MC34063A ICs

General Description

The MC33063A and MC34063A are simple dc-dc converter ICs that contain all of the primary circuitry required. An internal temperature-compensated reference, a comparator, an oscillator, a PWM controller with active current limiting, a driver, and a high-current output switch are the main components of these devices. As a result, the devices only require a few external components to produce boost, buck, and inverting converters. The MC33063A is rated for temperatures ranging from –40°C to 85°C, while the MC34063A is rated for temperatures ranging from 0°C to 70°C.

Features

• High Switch Current Output: Up to 1.5 A

• Current Limiting in Short Circuits

• Low Standby Current • Adjustable Output Voltage

• Up to 100 kHz Oscillator Frequency

It is widely employed in the military, communications, and remote control equipment, as well as in industrial and civil electronic equipment such as tape recorders, televisions, computers, and so on.

CAD Models

Symbol

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Footprint

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3D Model

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Pin Configuration

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Block Diagram

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Dimension

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Specification

· Technical

· Operating Temperature-0°C~70°C TA

· Moisture Sensitivity Level (MSL)-1 (Unlimited)

· Technology-BIPOLAR

· Peak Reflow Temperature (Cel)-260

· Supply Voltage-5V

· Output Voltage-1.55V

· Max Output Current-750mA

· Voltage – Input (Min)-3V

· Input Voltage-Nom-5V

· Current – Output-1.5A Switch

· Quiescent Current-4mA

· Max Output Voltage-40V

· Voltage – Output (Min/Fixed)-1.25V

· Min Output Voltage-1.55V

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