LM2576HVT-ADJ/LB03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVT-ADJ/LB03 is a high-voltage step-down switching regulator from Texas Instruments, part of the SIMPLE SWITCHER family. It operates with an input voltage range of 4V to 60V and delivers up to 3A output current. The device features an adjustable output voltage starting at 1.23V, fixed internal switching frequency of 52kHz, and integrated protection against overcurrent and thermal overload. Packaged in TO-220-5 for through-hole mounting, it supports operation across -40°C to 125°C junction temperature.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for high input voltages
• Fixed 52kHz switching frequency minimizes external component size
• Internal frequency compensation simplifies design
• Thermal shutdown and current limit protection included

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulators for switching regulators
• Efficient straight-through DC/DC converters

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix LB03 against official TI documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing PCB footprints for TO-220-5 packages. Cross-reference datasheet revisions to confirm pinout consistency with legacy designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed 40V but remain below 60V. The adjustable output allows flexibility for various load requirements. Consider thermal management due to power dissipation at higher input-output differentials. Verify that the 52kHz frequency aligns with EMI constraints of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576HV series, designed for high-input voltage applications. It replaces older linear regulators in high-dissipation scenarios. The HVT designation indicates a through-hole package variant within the broader LM2576 family, offering robust performance in industrial environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576HVT-ADJ/NOPB serves as a direct functional equivalent with RoHS compliance. Verify pinout compatibility before substitution. Other LM2576 variants may differ in package or current rating.