LM2575T-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-12 is a monolithic integrated circuit step-down switching voltage regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It operates with an input voltage range of 4V to 40V and provides a fixed 12V output at up to 1A load current. The device utilizes a TO-220-5 through-hole package and functions as a buck converter with a typical switching frequency of 52kHz. It supports an operating temperature range from -40°C to +125°C junction temperature.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active components for a complete buck converter solution requiring minimal external parts
• Includes internal frequency compensation and a fixed-frequency oscillator for simplified design
• Features built-in thermal shutdown and per-cycle current limiting for system protection

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient voltage regulation
• Pre-regulators for switching post-regulator circuits
• Efficient linear regulator replacements to reduce heat dissipation requirements

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity against official Texas Instruments documentation due to potential availability variations. Confirm that the specific part number matches the required fixed 12V output specification. Ensure the TO-220-5 through-hole package aligns with the target PCB layout constraints before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from an input voltage between 4V and 40V. The TO-220-5 package is suitable for applications where through-hole mounting is preferred or necessary for thermal management. Consider the 52kHz switching frequency for inductor selection and ensure the 1A current rating meets the load requirements without exceeding thermal limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575 series of SIMPLE SWITCHER regulators, designed to replace traditional three-terminal linear regulators. The series offers improved efficiency and reduced heat generation. The 'T' suffix indicates the TO-220-5 through-hole package variant, while '-12' specifies the fixed 12V output version within the product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers include LM2575T-12/NOPB, which represents the same functional device with lead-free packaging compliance.