1 Features

1• Wide Input Voltage Range: 3 V to 40 V

• High Output Switch Current: Up to 1.5 A

• Adjustable Output Voltage temperature•

Oscillator Frequency Up to 100 kHz

• Precision Internal Reference: 2%

• Short-Circuit Current Limiting

• Low Standby Current

2 Applications

• Blood Gas Analyzers: Portable

• Cable Solutions

• HMIs (Human Machine Interfaces)

• Telecommunications

• Portable Devices

• Consumer & Computing

• Test & Measurement

3 Description

The MC33063A and MC34063A devices are easy-to-

use ICs containing all the primary circuitry needed for building simple DC-DC converters. These devices

primarily consist of an internal temperature•

compensated reference, a comparator, an oscillator,

a PWM controller with active current limiting, a driver, and a high-current output switch. Thus, the devices

require minimal external components to build

converters in the boost, buck, and inverting

topologies.

The MC33063A device is characterized for operation

from –40°C to 85°C, while the MC34063A device is

characterized for operation from 0°C to 70°C.