1.5-A Boost/Buck/Inverting Switching Regulator - MC34063A

MC34063A (ACTIVE)

1.5-A Boost/Buck/Inverting Switching Regulator

Description

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
  • High Output Switch Current: Up to 1.5 A
  • Adjustable Output Voltage
  • Oscillator Frequency Up to 100 kHz
  • Precision Internal Reference: 2%
  • Short-Circuit Current Limiting
  • Low Standby Current

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Parametrics Compare all products in Inverting Converter

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Control Mode
Regulated Outputs (#)
Duty Cycle (Max) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
MC34063A MC33063A MC33063A-Q1
3     3     3    
40     40     40    
1.25     1.25     1.25    
40     40     40    
1.5     1.5     1.5    
4     4     4    
Constant on-time (COT)     Constant on-time (COT)     Constant on-time (COT)    
1     1     1    
80     80     90    
Catalog     Catalog     Automotive    
0 to 70     -40 to 85     -40 to 125    
8PDIP
8SOIC
8SON    
8PDIP
8SOIC
8SON    
8SOIC    
0.21 | 1ku     0.23 | 1ku     0.24 | 1ku