LM2576D2TR4-012G

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576D2TR4-012G is a monolithic integrated circuit from the LM2576 series, functioning as a step-down switching regulator (buck converter). Manufactured by onsemi, this device provides a fixed 12V output with a maximum load current capability of 3A. It operates within an input voltage range of 7V to 40V and utilizes a 52kHz internal fixed-frequency oscillator. The component is housed in a surface-mount TO-263 (D2PAK-5) package and supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 52kHz fixed-frequency oscillator to simplify external component selection and design complexity.
• Includes internal frequency compensation and thermal shutdown protection for robust operation under fault conditions.
• Offers high efficiency performance suitable for replacing linear regulators in power supply designs.

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) DC-DC converters
• Efficient pre-regulators for linear power supplies
• On-card switching regulator implementations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix 'TR4' corresponds to the tape-and-reel packaging configuration intended for automated assembly processes. Confirm that the '012' designation strictly indicates the fixed 12V output variant, distinguishing it from adjustable or other fixed voltage versions within the same family. Ensure compliance with RoHS standards if required by the final product specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12V output at up to 3A is required from an input rail between 7V and 40V. The TO-263 package is appropriate for applications requiring moderate thermal dissipation without excessive board space. Consider the 52kHz switching frequency when designing filter components, as it allows for smaller passive elements compared to lower-frequency alternatives while maintaining stable regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576 series of 3.0A step-down switching regulators. The series is designed as a direct replacement for popular three-terminal linear regulators, offering significantly higher efficiency. The D2TR4 suffix typically denotes the reel packaging format used for surface-mount technology (SMT) production lines, ensuring compatibility with standard pick-and-place equipment.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576D2T-12G: Identical functional specifications but in tube packaging rather than tape-and-reel.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum input voltage required for the LM2576D2TR4-012G?

The minimum input voltage is 7V, allowing the regulator to maintain regulation down to low input levels relative to its 12V output.

Does this device support negative output voltages?

While the LM2576 series architecture can be configured for negative outputs in external circuits, this specific fixed-output part number is optimized for positive voltage regulation.