STMicroelectronics

L4962/A

L4962/A Description

The L4962/A from STMicroelectronics is a monolithic buck switching voltage regulator designed for high-efficiency DC-DC conversion. With an adjustable output voltage ranging from 5.1V to 40V and a maximum output current of 1.5A, it is well-suited for power supply applications requiring stable and precise voltage regulation. The device operates over a wide input voltage range (9V to 46V), making it versatile for industrial, automotive, and telecom systems. Packaged in a 16-pin DIP (Through Hole), the L4962/A offers robust performance with a switching frequency of 100kHz, though it lacks synchronous rectification.

L4962/A Features

• Adjustable Output (5.1V–40V): Provides flexibility for diverse voltage requirements.
• High Input Voltage Tolerance (46V Max): Ideal for harsh environments with fluctuating power sources.
• 1.5A Output Current: Supports moderate power loads efficiently.
• Buck Topology: Ensures step-down conversion with minimal power loss.
• Non-Synchronous Rectification: Simpler design but slightly lower efficiency compared to synchronous models.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards.
• Wide Operating Temperature Range: Suitable for industrial applications.
• Obsolete Status: May require alternative sourcing for long-term projects.

L4962/A Applications

The L4962/A excels in medium-power DC-DC conversion scenarios, including:

• Industrial Power Supplies: For machinery requiring stable voltage under variable loads.
• Automotive Electronics: Where input voltage fluctuations are common.
• Telecom Infrastructure: Base stations and networking equipment needing reliable power regulation.
• Test & Measurement Systems: Precision instruments benefiting from adjustable output.
• Retrofit Designs: Legacy systems requiring through-hole mounting compatibility.

Conclusion of L4962/A

The L4962/A is a versatile, high-voltage buck regulator with a balance of performance and simplicity. While its obsolete status may limit new designs, its wide input range, adjustable output, and robust construction make it a reliable choice for existing applications. Engineers should evaluate alternatives for future-proofing but can leverage this IC for cost-effective, moderate-current power solutions in industrial and automotive systems.