LM2576D2T-012

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576D2T-012 is a monolithic integrated circuit switching regulator from the LM2576 series, manufactured by onsemi. It functions as a step-down (buck) DC-to-DC converter with a fixed 12V output and a maximum output current of 3A. The device operates within an input voltage range of 4V to 40V and features a fixed switching frequency of 52kHz. Designed for surface-mount applications, it utilizes a TO-263 (D2PAK-5) package. The component supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck topology designed for high-efficiency step-down conversion
• Fixed internal oscillator eliminates external timing components
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power systems
• Efficient pre-regulators for linear post-regulator circuits
• Standard 5V logic supply stepping down from higher bus voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '012' confirms the fixed 12V output variant rather than adjustable or other fixed voltages. Confirm the 'D2T' designation matches the required TO-263 surface-mount package. Ensure RoHS compliance status aligns with project requirements. Cross-reference the manufacturer part number against official datasheets to validate pinout and electrical specifications before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output at up to 3A is required from an input rail between 4V and 40V. The TO-263 package offers superior thermal dissipation compared to smaller SMD packages. Consider the 52kHz switching frequency for filter component sizing. Verify that the fixed output voltage meets the load requirements without needing external feedback resistors.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of simple-to-use step-down switching regulators. The family includes adjustable versions and various fixed output voltages. The D2T suffix indicates the surface-mount D2PAK-5 package variant, distinguishing it from through-hole TO-220 versions like the LM2576TV series. These regulators are widely used for their simplicity and robustness in industrial and commercial power supplies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements include other LM2576 variants with different output voltages if voltage adjustment is possible. Check for updated revisions from onsemi or equivalent parts from other manufacturers offering similar 3A buck converter specifications in TO-263 packages.