ON Semiconductor MC34063D Step-Up/Down/Inverting Switching Regulator

The ON Semiconductor MC34063D is a versatile switching regulator IC that is designed to facilitate step-up, step-down, and voltage-inverting applications with a minimal number of external components. This integrated circuit is a monolithic control circuit containing the primary functions required for DC-to-DC converters.

Key Features

• Adjustable Output Voltage: The MC34063D offers a wide adjustable output voltage range, which allows for a high degree of flexibility in designing power supplies that cater to various voltage requirements.
• High Precision: It features a reference voltage of 2.5V ±4% over temperature variations, ensuring reliable and consistent performance.
• Wide Input Voltage Range: This device can handle an input voltage range from 3V to 40V, making it suitable for a broad spectrum of power supply scenarios.
• Output Switch Current: The IC has an output switch current of up to 1.5A, which is ample for a variety of applications, including battery chargers, power adapters, and embedded systems.
• Frequency Operation: It operates at a frequency up to 100kHz, which can be adjusted by an external RC timing network.
• Efficiency: The MC34063D provides high-efficiency operation, which is critical for portable and battery-powered devices.
• Low Standby Current: The quiescent current is 2.5mA, contributing to the efficiency of the overall design, especially in standby modes.
• Protection Features: It includes built-in current limiting and thermal shutdown features to protect the device under abnormal conditions.

Applications

The MC34063D is ideal for a variety of applications, including:

• Power supplies for portable devices
• DC/DC converters for automotive applications
• Step-up/down voltage applications in consumer electronics
• Voltage inverters in industrial systems

With its wide input voltage range and adjustable output voltage capability, the MC34063D from ON Semiconductor is a go-to solution for designers looking to create efficient and reliable power management systems. Its compact SOIC-8 package makes it suitable for space-constrained applications, while its robust protection features ensure long-term reliability.