LM2575WT

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575WT is a monolithic integrated circuit step-down switching regulator manufactured by Microchip Technology. It operates with an input voltage range of 4V to 40V and provides a fixed 5V output at up to 1A load current. The device utilizes a buck topology with a standard switching frequency of 52kHz. It is housed in a TO-263-5 surface-mount package, suitable for applications requiring efficient DC-DC conversion without external compensation components.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator and internal error amplifier for simplified design
• Includes built-in thermal shutdown and current limit protection mechanisms
• Offers high efficiency compared to traditional linear regulators
• Supports external control pin for standby mode operation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for switching regulators
• Efficient step-down converters from higher voltage rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'WT' against official Microchip documentation to confirm it denotes the tube packaging variant rather than tape-and-reel. Ensure the part number matches the exact electrical specifications required, as suffixes may indicate temperature grades or packaging differences that affect handling and storage requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an input voltage between 4V and 40V. It is appropriate for designs needing 1A continuous current with minimal external component count. Consider the TO-263-5 package for surface-mount assembly and adequate thermal dissipation without excessive heatsinking in most standard applications.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of switching regulators, originally developed by National Semiconductor and now produced by Microchip Technology. The series is known for replacing linear regulators to reduce heat generation. The 'WU' or 'WT' variants typically refer to the TO-263-5 surface-mount package configuration within this family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2592HVS-5.0/NOPB (Texas Instruments) is listed as a similar alternative. Verify pin compatibility and thermal performance before substitution.