Integrated Circuit Chip DC-DC Converter Control Circuits MC34063ABD-TR
integrated circuit ic
,integrated circuit components
1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
DESCRIPTION/ORDERING INFORMATION
The MC33063A and MC34063A 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 is characterized for operation from –40°C to 85°C, while the MC34063A is characterized for operation from 0°C to 70°C.
FEATURES
• Wide Input Voltage Range: 3 V to 40 V
• Precision Internal Reference: 2%
• High Output Switch Current: Up to 1.5 A
• Short-Circuit Current Limiting
• Adjustable Output Voltage
• Low Standby Current
• Oscillator Frequency Up to 100 kHz
| MIN MAX | UNIT | |
| VCC Supply voltage | 3 40 | V |
| TA Operating free-air temperature MC33063A MC34063A |
–40 85 | °C |
| 0 70 |
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