LM2575T-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-ADJ is a SIMPLE SWITCHER® 1A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 4.75V to 40V and provides an adjustable output voltage from 1.23V to 37V. The device features a fixed switching frequency of 52kHz and supports a maximum output current of 1A. It is housed in a TO-220-5 through-hole package and functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller for simplified design
• Internal frequency compensation ensures stability without external components
• Built-in thermal shutdown protects against overheating
• Fixed 52kHz switching frequency minimizes passive component size

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulators for switching post-regulators
• Efficient linear regulators replacement
• Battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and manufacturer origin, as the LM2575 series has been produced by multiple vendors including National Semiconductor and Texas Instruments. Confirm RoHS compliance status and check for obsolescence notices, as certain variants may be discontinued or subject to last-time buys. Ensure the TO-220-5 package matches your PCB footprint requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a robust, high-current buck converter is needed with minimal external component count. The adjustable output allows flexibility for various voltage rails. Consider the thermal performance of the TO-220 package for heat dissipation needs. Verify that the input voltage does not exceed the 40V limit for standard versions; use HVT variants for higher inputs.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 family of SIMPLE SWITCHER regulators, designed for easy implementation of DC-DC conversion. The 'T' indicates a through-hole TO-220 package, while 'ADJ' specifies the adjustable output version. It is part of a broader line including fixed voltage outputs and surface-mount options.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include LM2575T-5.0/NOPB for fixed 5V output or LM2575T-12 for fixed 12V output if the application requires a specific voltage. For higher input voltage capabilities, consider the LM2575HVT-ADJ variant.