LM2575D2T-012

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575D2T-012 is a monolithic integrated circuit step-down switching regulator manufactured by onsemi. It operates as a fixed-frequency buck converter with a nominal switching frequency of 52 kHz. The device provides a fixed output voltage of 12 V and supports an output current of up to 1 A. It accepts an input voltage range from 4.75 V to 40 V. The component utilizes a surface-mount SOT-223-5 package and is rated for operation within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch eliminates the need for external high-voltage components
• Fixed internal oscillator ensures stable switching frequency without external timing components
• Built-in thermal shutdown protects against overheating during fault conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC-DC conversion modules
• Pre-regulator stages for downstream linear regulators
• Efficient battery-powered systems requiring step-down topology

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'D2T' against the official datasheet to confirm the SOT-223-5 surface mount package variant. Confirm RoHS compliance status and check for End-of-Life notifications, as older LM2575 variants may have discontinuation notices. Ensure the supplier source matches the manufacturer's authorized distribution channels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12 V output is required in a compact surface-mount design. It serves as a direct replacement for through-hole TO-220 versions where board space is limited. Consider the thermal performance of the SOT-223 package relative to the expected load current and ambient temperature constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 series of simple-to-use step-down switching regulators. The series is designed for easy implementation of buck converters using minimal external components. The LM2575D2T-012 specifically denotes the 12 V fixed output version in the surface-mount SOT-223-5 configuration.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575T-ADJG (onsemi) offers adjustable output in a similar package. TL2575HV-12IKV (Texas Instruments) is a comparable fixed 12 V buck regulator. Verify pinout compatibility and thermal characteristics before substitution.