LM2575HVT-ADJ/LF03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575HVT-ADJ/LF03 is a Texas Instruments SIMPLE SWITCHER power module designed as a step-down DC-DC converter. It operates with an input voltage range of 4V to 60V and provides a continuous output current of 1A. The adjustable output voltage ranges from 1.23V to 57V. This component utilizes a TO-220-5 through-hole package, supporting operation temperatures from -40°C to +125°C. Key electrical specifications include a typical switching frequency of 52kHz, a maximum efficiency of 77%, and output ripple and noise of 150mV.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator combining control circuitry, oscillator, error amplifier, and power switch in a single package.
• Fixed internal switching frequency eliminates the need for external frequency compensation components.
• Includes thermal shutdown and current limiting protection mechanisms for enhanced reliability.
• Requires minimal external components to implement standard buck or boost converter topologies.

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high-voltage step-down conversion
• Pre-regulators for downstream linear regulators
• Battery-powered systems utilizing high-voltage sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix LF03 against the manufacturer's official datasheet to confirm lead-free compliance and RoHS status. Confirm the package type matches the required through-hole mounting configuration. Check for end-of-life notices or obsolescence warnings directly from Texas Instruments documentation before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed-frequency, high-input voltage buck converter is required with through-hole mounting capabilities. Ensure the application demands an adjustable output voltage within the 1.23V to 57V range. Verify that the 1A output current rating meets the load requirements and that the operating temperature range aligns with the environmental conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575 series of SIMPLE SWITCHER power modules. These are widely recognized for their ease of use and robust performance in high-voltage applications. The HVT variant specifically supports higher input voltages up to 60V compared to standard versions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements may include LM2575HVS-ADJ/NOPB for surface mount applications or LM2575HVT-ADJ/NOPB for equivalent through-hole packages with updated manufacturing standards. Verify pin compatibility and thermal characteristics when substituting.