onsemi

MC34163DW

MC34163DW Description

The MC34163DW from onsemi is a versatile DC switching voltage regulator IC designed for buck, boost, and inverting configurations. Housed in a 16-SOIC package, it supports an adjustable output voltage ranging from 1.25V to 40V, with a maximum input voltage of 40V and a switching current capability of 3.4A. Operating at a 50kHz switching frequency, this regulator is optimized for efficiency in compact power supply designs. Although marked as obsolete, it remains a reliable choice for legacy systems due to its robust performance and wide operating temperature range (0°C to 70°C).

MC34163DW Features

• Adjustable Output: Configurable for positive or negative output voltages, offering design flexibility.
• Wide Input Range: Operates from 2.5V to 40V, accommodating diverse power sources.
• High Current Handling: Delivers up to 3.4A switching current, suitable for medium-power applications.
• Buck/Boost Topology: Supports step-down (buck) and step-up (boost) configurations, ideal for variable voltage requirements.
• Surface-Mount Design: 16-SOIC package ensures compact PCB integration.
• Non-Synchronous Rectification: Simplifies design while maintaining efficiency.

MC34163DW Applications

The MC34163DW excels in applications requiring efficient voltage conversion with moderate power demands, such as:

• Industrial Power Supplies: For control systems and instrumentation.
• Automotive Electronics: Non-critical voltage regulation in legacy automotive modules.
• Consumer Electronics: Power management in audio amplifiers, displays, and portable devices.
• Telecom Equipment: Auxiliary power circuits in base stations and networking hardware.
• LED Drivers: Constant-current or voltage regulation for lighting systems.

Conclusion of MC34163DW

While the MC34163DW is obsolete, its versatility, wide input range, and high current capability make it a viable option for legacy designs or replacements in existing systems. Its ability to support buck, boost, and inverting topologies provides engineers with a flexible solution for diverse power conversion needs. For new designs, modern alternatives may be preferred, but the MC34163DW remains a testament to onsemi's legacy in robust power management ICs.