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Manufacturer Part #


MC34063A Series 40V 1.5A 100kHz Step-Up/Down/Inverting Switching Regulator-SOIC8

Product Specification Section
onsemi MC34063ADR2G - Technical Attributes
Attributes Table
Topology: Buck/Boost/Inverting
Input Voltage: 3V to 40V
Output Current-Max: 1.5A
Output Type: Adjustable
Switching Frequency-Max: 100kHz
Operating Temp Range: 0°C to 70°C
Efficiency: 87.7%
No. of Outputs: 1
Storage Temperature Range: -65°C to +150°C
Load Regulation: 10mV
Load Regulation (%): 0.017%
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications

The MC34063A Series are switching regulators with monolithic control circuit containing the  primary functions required for DC−to−DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step−Down and Step−Up and Voltage−Inverting applications with a minimum number of external components. The MC33063 is an extended temperature version. The NCV33063 is an extended temp version for automotive.

Key Features:

  • Operation from 3.0 V to 40 V Input
  • Low Standby Current
  • Current Limiting
  • Output Switch Current to 1.5 A
  • Output Voltage Adjustable
  • Frequency Operation to 100 kHz
  • Precision 2% Reference
  • Pb−Free Packages are Available
  • MC33063A = -40 to +85 °C


  • Wide input voltage range usable for many applications
  • <100 uA Collector Off-State Current
  • Adjustable current limit provides improved protection
  • Large 1.5A peak current capability provides up to ~1A of average current output
  • External resistor divider for various output voltage options
  • Optimize frequency for size or efficiency
  • Accurate system level performance
  • Exposed pad package allows for higher output current and improved thermal performance


  • Higher Switching Frequency
  • Fan Controller
  • DC-DC Power Supply 
Pricing Section
Global Stock:
Factory Stock:Factory Stock:
Factory Lead Time:
15 Weeks
Minimum Order:
Multiple Of:
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