LM2576WT

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576WT is a step-down switching regulator manufactured by Microchip Technology, designed for high-efficiency DC-DC conversion. It operates with an input voltage range of 4 V to 40 V and delivers up to 3 A output current. The device utilizes a fixed 52 kHz internal oscillator and supports adjustable output voltages from 1.23 V to 37 V. Packaged in a TO-220-5 through-hole format, it functions as a buck converter suitable for industrial applications within a temperature range of -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency internal oscillator for simplified external component requirements
• Includes comprehensive protection circuits featuring current limiting and thermal shutdown
• Provides external control capability for synchronization or power supply sequencing

Voltage Regulators - DC DC Switching Regulators Applications

• Embedded microcontroller unit (MCU) power supplies
• Industrial distributed power systems
• Direct-to-board regulation from higher bus voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'WT' against the official Microchip datasheet to confirm package type and temperature rating. Ensure compatibility with RoHS directives if required by your manufacturing standards. Cross-reference ordering information directly with the manufacturer's catalog to avoid discrepancies between distributor listings and official part specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, through-hole buck regulator is required for moderate current loads. It serves as a direct replacement for legacy linear regulators to improve efficiency and reduce thermal management complexity. Consider the TO-220-5 package for ease of prototyping and heat dissipation needs without requiring complex surface-mount assembly techniques.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of switching regulators, originally developed by National Semiconductor and now produced by Microchip Technology. The series is widely recognized for its reliability and simplicity in designing efficient step-down power supplies. The WT variant specifically denotes the through-hole packaging option within this established product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576BT is listed as a direct substitute by distributors.