LM2575-5.0WU

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-5.0WU is a fixed-output step-down switching regulator manufactured by Microchip Technology, housed in a TO-263-5 surface-mount package. It provides a regulated 5V output with a maximum current capacity of 1A. The device operates within an input voltage range of 4V to 40V and utilizes a fixed 52kHz internal oscillator frequency. Designed for high efficiency, it integrates an internal power switch and requires minimal external components. The component supports junction temperatures from -40°C to 125°C and complies with RoHS3 standards.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency 52kHz oscillator and internal frequency compensation to minimize external component count.
• Includes built-in thermal shutdown and cycle-by-cycle current limiting for robust fault protection.
• Features a low standby supply current to enhance efficiency during low-load or quiescent conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient buck regulators for general-purpose DC-DC conversion
• Pre-regulators for linear post-regulator topologies
• Positive-to-negative converter implementations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'WU' corresponds to the TO-263-5 (D2PAK) surface-mount package variant when sourcing. Confirm RoHS3 compliance status as required by project specifications. Ensure the supplier provides original manufacturer documentation to validate authenticity. Check for any recent Product Change Notifications regarding packaging or labeling updates before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a simple, cost-effective buck topology with a fixed 5V output. It is suitable for applications where a 1A load current is sufficient and space constraints favor surface-mount mounting over through-hole options. Consider the 52kHz switching frequency when selecting external inductors and capacitors to ensure optimal performance and size reduction compared to higher-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of monolithic integrated circuits designed to provide all active functions for a step-down switching regulator. The series is widely recognized for replacing traditional three-terminal linear regulators, offering significant improvements in heat dissipation and overall system efficiency. The LM2575-5.0WU specifically addresses the need for a reliable 5V source in compact electronic assemblies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2592HVS-5.0/NOPB is documented as a similar alternative. Verify pin compatibility and electrical parameter alignment before substitution. Note that different manufacturers may have variations in thermal characteristics or external component requirements.