LM2576T-5.0/LB03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576T-5.0/LB03 is a monolithic integrated circuit from the Texas Instruments SIMPLE SWITCHER series, functioning as a 3A step-down voltage regulator. It utilizes Buck topology to provide a fixed 5V output with a maximum input voltage of 40V and a minimum of 4V. The device operates at a switching frequency of 52kHz and supports an output current of up to 3A. It features a TO-220-5 package for through-hole mounting and is rated for operation within a temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active functions for a complete step-down switching power supply solution
• Includes internal fixed-frequency oscillator for accurate timing control
• Incorporates thermal shutdown circuitry to protect against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power systems requiring efficient voltage regulation
• On-card switching regulators for local power conversion
• Standard 5V logic supplies derived from higher bus voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the LB03 suffix corresponds to the specific tape-and-reel packaging configuration intended for automated assembly processes. Confirm that the component meets RoHS standards and lacks hazardous substances as per manufacturer declarations. Ensure the ordering part number matches the required lead-free specifications and package type before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an input voltage ranging between 4V and 40V. It is suitable for designs needing up to 3A of continuous load current with high efficiency. Consider the TO-220 package for applications requiring robust thermal dissipation via through-hole mounting on printed circuit boards.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of SIMPLE SWITCHER regulators, which are designed for ease of use and flexibility in power supply design. The LM2576 series provides a cost-effective solution for step-down applications, combining high efficiency with simple external component requirements compared to linear regulators.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576T-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage supported by this regulator?

The LM2576T-5.0/LB03 supports a maximum input voltage of 40V.

Does this device include protection against overheating?

Yes, the device incorporates thermal shutdown circuitry to protect the IC during overtemperature conditions.