ON Semiconductor MC34063BDR2 - DC-DC Converter IC

The ON Semiconductor MC34063BDR2 is a versatile and robust DC-DC converter integrated circuit (IC) designed for a wide range of applications requiring voltage step-up (boost), step-down (buck), or voltage-inverting capabilities. This highly integrated device is a monolithic control circuit containing the primary functions required for DC-to-DC converters, making it a popular choice among engineers and designers for its flexibility and ease of use.

The MC34063BDR2 features an internal oscillator, a temperature-compensated reference, a comparator, a controlled duty cycle oscillator with an active current limit circuit, a driver, and a high current output switch. This combination of features enables the design of compact, efficient, and reliable power supplies with a minimal number of external components.

Key Features:

• Adjustable Output Voltage: The output voltage can be adjusted through external resistors, providing design flexibility to meet various application requirements.
• Wide Input Voltage Range: The IC operates from an input voltage ranging from 3 V to 40 V, accommodating a variety of power sources.
• High Output Switch Current: The device can handle up to 1.5 A of output current, suitable for a range of power conversion tasks.
• Low Standby Current: The quiescent current is low, which enhances the overall efficiency of the power supply, especially in battery-powered applications.
• Frequency Operation: The oscillator frequency can be set by an external capacitor and resistor, or it can be driven by an external clock to reduce electromagnetic interference (EMI).

Typical Applications:

The MC34063BDR2 is used in various applications, including:

• Power supply for portable devices
• Automotive applications
• Battery chargers
• DC-DC converters for distributed power supplies
• Voltage inverting applications

With its SOP-8 package, the MC34063BDR2 is compact and suitable for space-constrained applications. Its operational temperature range of -40°C to +85°C ensures reliability across diverse environmental conditions. Whether for consumer electronics, automotive systems, or industrial equipment, the MC34063BDR2 from ON Semiconductor is a go-to choice for efficient power management solutions.