ONSEMI MC34063ADG DC-DC Switching Regulator, Buck/Boost/Inverting, SOIC-8

The ONSEMI MC34063ADG is a versatile, adjustable DC-DC switching regulator designed for a wide range of power conversion applications. This monolithic control circuit integrates all primary functions required for DC-to-DC converters, including an internal temperature-compensated reference, comparator, controlled duty-cycle oscillator with an active current limit circuit, driver, and a high-current output switch.

Operating from an input voltage range of 3V to 40V, this regulator supports step-down (buck), step-up (boost), and voltage-inverting topologies, making it an ideal solution for many power supply designs. With an output switch current capacity of up to 1.5A and a switching frequency of up to 100kHz, it delivers efficient and reliable performance. The output voltage is adjustable from 1.25V up to 40V, providing design flexibility.

The device features a precision 2% reference, low standby current, and an adjustable current limit, ensuring accurate and efficient operation. Housed in an industry-standard 8-pin SOIC package, it is suitable for surface mount assembly. The operating ambient temperature range is from 0°C to 70°C, making it suitable for a variety of environments.

With a typical efficiency of 87.7%, the MC34063ADG is designed to minimise power loss, contributing to overall system energy efficiency. Whether you are designing power supplies for consumer electronics, industrial controls, or automotive applications, this regulator offers a compact, cost-effective, and reliable solution with minimal external components.