onsemi

MC34163P

MC34163P Description

The MC34163P from onsemi is a versatile DC switching voltage regulator IC designed for buck, boost, and voltage-inverting applications. This adjustable-output regulator supports a wide input voltage range (2.5V to 40V) and delivers up to 3.4A of switch current, making it suitable for medium-power applications. Housed in a 16-pin DIP (Through-Hole) package, it operates at a fixed switching frequency of 50kHz, balancing efficiency and noise performance. The device can generate positive or negative output voltages, with an adjustable range from 1.25V to 40V, providing flexibility in diverse circuit designs. Although marked as obsolete, it remains a reliable choice for legacy systems due to its robust performance and simplicity.

MC34163P Features

• Wide Input Range: Operates from 2.5V to 40V, accommodating various power sources.
• High Output Current: Supports up to 3.4A (switch current) for demanding loads.
• Adjustable Output: Configurable from 1.25V to 40V for positive or negative outputs.
• Buck/Boost Capability: Supports step-down (buck) and step-up (boost) topologies.
• Fixed 50kHz Switching: Ensures predictable noise characteristics and stable operation.
• Through-Hole Packaging: 16-pin DIP for easy prototyping and repair.
• Robust Design: REACH unaffected and MSL 1 (unlimited) for long-term reliability.

MC34163P Applications

• Power Supplies: Ideal for industrial, automotive, and telecom systems requiring medium-power regulation.
• Battery-Powered Devices: Efficiently manages voltage conversion in portable equipment.
• LED Drivers: Suitable for constant-current/voltage LED power modules.
• Negative Voltage Generation: Used in audio amplifiers and instrumentation needing dual supplies.
• Legacy System Maintenance: A go-to solution for repairing or replicating older designs due to its discontinued status.

Conclusion of MC34163P

The MC34163P stands out for its flexibility, wide voltage range, and robust performance in buck/boost applications. While newer alternatives exist, its simplicity, through-hole packaging, and proven reliability make it a practical choice for legacy designs, prototyping, and medium-power regulation tasks. Engineers working on industrial control, automotive electronics, or retrofits will find this IC particularly valuable despite its obsolete status.