LM2576D2T-005

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576D2T-005 is a monolithic integrated circuit from the LM2576 series, designed as a step-down switching regulator (buck converter). Manufactured by onsemi, this device supports surface mount installation in a TO-263 package with five pins. It delivers a fixed output voltage of 5.25V and provides an output current capability of 3A. The component operates within an input voltage range of 8V to 40V and features a switching frequency of 52kHz. It ensures excellent line and load regulation while driving loads up to 3.0A. The device functions reliably across a temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Monolithic integration for simplified buck converter design
• Fixed 5.25V output with 3A load capability
• Internal 52kHz oscillator for standard component compatibility
• Built-in thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down switching regulators
• High efficiency pre-regulators for linear regulators
• Local on-card regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number suffix corresponds to the fixed 5.25V output variant rather than adjustable or other fixed voltage options. Confirm the package type matches the required surface mount footprint. Ensure compliance with RoHS standards if applicable to the target assembly. Cross-reference the manufacturer datasheet for exact pinout and thermal pad requirements to guarantee correct PCB layout and soldering procedures.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5.25V output is required without external feedback resistors. It is suitable for applications needing 3A current capacity with high efficiency. Consider the 52kHz switching frequency for inductor selection. Evaluate the input voltage range against the source supply. Check thermal management needs due to power dissipation at higher currents.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of switching regulators, which are widely used for efficient DC-DC conversion. The series includes various fixed voltage outputs and adjustable versions. The D2T suffix indicates a surface mount package variant, distinct from through-hole options. This specific model provides a stable 5.25V rail for downstream circuitry.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576D2TR4-5G

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for this regulator?

The maximum input voltage is 40V.

Does this device support negative output voltages?

While the series can be configured for negative outputs in specific topologies, this fixed 5.25V part is primarily designed for positive step-down applications.