onsemi | MC34063ADG

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

Benefits:

• 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

Applications:

• Higher Switching Frequency
• Fan Controller
• DC-DC Power Supply ​