LM2575-12WU

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-12WU is a monolithic integrated circuit from the LM2575 series, functioning as a step-down (buck) switching voltage regulator. Manufactured by Microchip Technology, this device provides a fixed 12V output with a maximum load current of 1A. It operates within an input voltage range of 4V to 40V and utilizes a buck topology at a typical switching frequency of 52kHz. The component is housed in a TO-263-5 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated internal frequency compensation simplifies external component requirements for stable operation.
• Fixed 12V output version eliminates the need for external feedback resistors for standard regulation.
• Includes internal thermal shutdown and current limiting protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC-DC conversion modules
• Pre-regulator stages for linear regulators
• Battery-powered systems requiring efficient voltage stepping

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'WU' against the official Microchip datasheet to confirm the TO-263-5 package and tube packaging format. Ensure the part number matches the exact manufacturer designation to avoid confusion with similar variants from other vendors or different pin configurations.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from an input voltage between 4V and 40V. It is suitable for applications needing up to 1A continuous load current with moderate efficiency requirements. Consider the thermal performance of the TO-263 package relative to the expected power dissipation in the final design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 family of simple switcher regulators. The family includes adjustable versions and various fixed output voltages. The LM2575-12WU specifically denotes the 12V fixed output variant in the Microchip TO-263-5 package, distinguishing it from through-hole or high-voltage HV series counterparts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct equivalents such as the LM2575-12 from Texas Instruments or ON Semiconductor, ensuring pin compatibility and electrical specifications match. Verify if alternative packages like D2PAK are acceptable for the physical layout constraints.