LM2576-12WU-TR

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576-12WU-TR is a monolithic integrated circuit buck switching regulator from Microchip Technology, providing a fixed 12 V output. It supports a maximum input voltage of 40 V and delivers up to 3 A load current. The device operates with a typical switching frequency of 52 kHz and includes an internal oscillator for frequency compensation. It is housed in a TO-263 (D2PAK) package with five leads plus a tab.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates active functions of a step-down switching regulator including internal oscillator and frequency compensation
• Provides fixed 12 V output with high line and load regulation capabilities
• Features built-in thermal shutdown and current limiting for operational protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator circuits for switching regulators
• Efficient straight-through regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when sourcing. Confirm the manufacturer is Microchip Technology, as other vendors produce compatible parts with different specifications. Check RoHS compliance status against the latest datasheet revision before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a fixed 12 V output at currents up to 3 A. Ensure the input voltage does not exceed 40 V. Consider the TO-263 package thermal performance for heat dissipation requirements in the target design environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of simple-to-use step-down switching regulators. The series offers fixed output voltages including 3.3 V, 5 V, 12 V, and 15 V, alongside adjustable versions. It is designed to reduce external component count through internal frequency compensation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2576-12 from Texas Instruments or onsemi. Verify pinout compatibility and thermal characteristics when replacing. Ensure the substitute part supports the required 3 A output current and 40 V input range.