The MC34063N is a monolithic control circuit containing the primary functions required for DC-to-DC converters. This device from HGSEMI is specifically designed for step-up, step-down, and inverting applications. It integrates an internal temperature-compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver, and high-current output switch.

Applications:

• Step-up DC-DC converters (Boost Converters)
• Step-down DC-DC converters (Buck Converters)
• Voltage Inverting Converters
• Battery Chargers
• LED Drivers

Features:

• Low standby current
• Output switch current to 1.5A
• Adjustable output voltage
• Operating frequency from 100Hz to 100kHz
• Short circuit current limiting
• Input voltage range from 3.0V to 40V

Benefits:

• Versatile building block for various DC-DC converter topologies
• High efficiency allows for cooler operation
• Reduced external component count saves board space and cost
• Easily adjustable output voltage for flexible design
• Protects the circuit from damage due to overcurrent conditions

Additional Details:

The MC34063N is a versatile and cost-effective solution for implementing DC-to-DC converters. Its adjustable output voltage and operating frequency provide flexibility in design. The internal current limiting function protects the device from damage due to overcurrent conditions. This allows designers to create efficient power supplies. The device can operate with input voltages ranging from 3.0V to 40V, making it suitable for a wide range of applications. It is commonly used in portable devices, industrial control systems, and automotive electronics where efficient power conversion is critical. When selecting components for the external circuitry, it's crucial to consider the voltage and current ratings as well as the switching frequency of the application. Often available in DIP and SOIC packages.