LM2575T-5.0/LB03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-5.0/LB03 is a Texas Instruments SIMPLE SWITCHER® 1A step-down voltage regulator in a TO-220-5 package. It provides a fixed 5.0V output with a maximum input voltage of 40V and supports up to 1A load current. The device operates at a typical switching frequency of 52kHz, ensuring high efficiency and minimal external component requirements. It features internal frequency compensation, thermal shutdown, and cycle-by-cycle current limiting for robust performance.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated fixed-frequency oscillator simplifies design by eliminating the need for external timing components.
• Built-in thermal shutdown and cycle-by-cycle current limiting protect the device under fault conditions.
• Requires minimal external components due to integrated frequency compensation and control circuitry.

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient buck conversion
• Pre-regulator circuits for downstream switching regulators
• Linear regulator replacements to reduce heat dissipation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the LB03 suffix indicates specific tape-and-reel packaging or variant specifications against the official datasheet. Confirm RoHS compliance status as indicated by the NOPB equivalent if applicable. Ensure the TO-220-5 through-hole package matches the target PCB footprint requirements before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part for applications needing a fixed 5V output from inputs up to 40V with currents up to 1A. Consider the TO-220-5 package for through-hole assembly needs. Evaluate thermal management requirements based on the expected voltage drop and load current, as efficiency varies with operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 family of SIMPLE SWITCHER regulators, designed to replace traditional linear regulators for improved efficiency. The series offers fixed and adjustable output versions, supporting various input voltages while maintaining compact designs with minimal external passive components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575T-5.0/NOPB is a direct functional replacement with identical electrical characteristics and pinout. Verify that the packaging difference does not impact mechanical integration or automated placement processes in the final assembly line.