LM2575-5.0WU-TR

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-5.0WU-TR is a fixed-output step-down switching voltage regulator manufactured by Microchip Technology, part of the LM2575 series. It provides a regulated 5V output with a maximum load current of 1A. The device operates from an input voltage range of 4V to 40V and utilizes a fixed internal oscillator at a typical frequency of 52kHz. Designed for high efficiency, it replaces linear regulators to reduce heat dissipation requirements. The component features built-in frequency compensation, thermal shutdown, and current limiting protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator and internal frequency compensation to minimize external component count.
• Includes comprehensive protection circuits such as thermal shutdown and per-cycle current limiting.
• Supports external shutdown control via the ON/OFF pin to reduce standby power consumption.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient DC/DC step-down converters for industrial systems
• Pre-regulator stages for linear post-regulators
• Positive-to-negative converter topologies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing, as standard datasheets may reference tube packaging for the base model. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to assembly planning. Ensure the supplier source aligns with Microchip Technology authorized distribution channels to guarantee component authenticity and traceability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a simple, robust buck conversion solution with minimal external parts. It is suitable where a 5V rail is needed from higher voltage sources up to 40V. Consider the TO-263 package thermal performance relative to the expected load current and ambient temperature conditions to determine if additional heatsinking is necessary for reliable operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 family of monolithic integrated step-down switching regulators. The series offers various fixed output voltages including 3.3V, 12V, and 15V, alongside adjustable versions. The LM2575 variant specifically supports input voltages up to 40V, distinguishing it from the LM2575HV which handles higher inputs. The WU suffix typically denotes the TO-263 surface-mount package configuration.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2592HVS-5.0/NOPB is documented as a similar alternative. Verify pin compatibility and thermal characteristics before substitution.