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.