MC34063 voltage regulator

The MC34063 is a versatile DC-DC converter integrated circuit designed to provide a stable output voltage from a varying input voltage. It is capable of functioning as a step-up (boost), step-down (buck), or inverting regulator. This flexibility, along with its ease of use and low cost, makes it a popular choice for various power conversion applications in electronics.

Key Features:

• Capable of step-up (boost), step-down (buck), and inverting voltage regulation
• Adjustable output voltage with a wide range of input and output voltages
• High efficiency up to 80% (depending on application and components)
• Built-in protection features, including thermal shutdown and current limiting
• Simple design with minimal external components required

Technical Specifications:

• Input Voltage Range: 3V to 40V
• Output Voltage Range: Adjustable from 1.25V to 37V
• Output Current: Up to 1.5A
• Switching Frequency: 100 kHz (typical)
• Efficiency: Up to 80% (depends on configuration)
• Thermal Shutdown: Integrated
• Current Limiting: Integrated
• Package Type: Typically available in 8-pin DIP or SOIC packages

Applications:

• Power supplies for electronic devices
• Battery-powered applications
• Voltage level shifting
• LED drivers
• Low-power DC-DC converters
• Inverting and boosting circuits

Usage:

1. Connect the input voltage to the appropriate pins of the MC34063, following the pin configuration of the package.
2. Choose external components (inductor, capacitor, and diode) based on the desired output voltage and current, using the datasheet guidelines for calculations.
3. Adjust the output voltage by configuring the feedback resistors as per the application requirements.
4. Ensure proper heat dissipation and check for adequate cooling if operating at high currents or power levels.

Caution:

• Ensure the input and output voltage ratings are within the specified limits to avoid damage.
• Properly size the external components to meet the design requirements and avoid efficiency losses.
• Handle the IC with care to avoid damage from electrostatic discharge (ESD).

Datasheet:
For detailed technical specifications, refer to the MC34063 Datasheet.