LM2576T-ADJ/S5001479

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576T-ADJ is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a 3A step-down voltage regulator. It utilizes a fixed-frequency internal oscillator of 52 kHz to maintain stable operation. The device supports an adjustable output voltage range and accepts an input voltage between 4V and 40V. Designed for through-hole mounting in a TO-220-5 package, it operates within a temperature range of -40°C to 125°C. Key electrical parameters include a maximum output current of 3A and a typical quiescent current of 5mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator with built-in frequency compensation
• Fixed 52 kHz internal oscillator for simplified external component selection
• Internal thermal shutdown and current limit protection circuits

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high efficiency
• Pre-regulators for linear post-regulator modules
• Efficient buck converters for battery-powered applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and exact electrical tolerances. Ensure the procurement channel provides traceable origin data to mitigate counterfeit risks. Cross-reference the manufacturer part number with authorized distributor catalogs to validate current production status and RoHS compliance certifications prior to ordering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing a non-isolated DC-DC converter requiring up to 3A load current. It is suitable for applications where a fixed switching frequency simplifies EMI filtering requirements. Consider the TO-220 package for thermal management needs in through-hole PCB layouts. Evaluate input voltage ranges to ensure they remain within the specified 4V to 40V operational limits for reliable regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of SIMPLE SWITCHER regulators, which are widely recognized for their ease of use and robust performance in industrial and commercial power supplies. The series includes fixed voltage variants and adjustable versions like this one. It represents a mature technology platform established by Texas Instruments for cost-effective step-down conversion solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576T-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the switching frequency of the LM2576T-ADJ?

The device features a fixed internal oscillator operating at 52 kHz.

Does the LM2576T-ADJ include overtemperature protection?

Yes, the integrated circuit incorporates internal thermal shutdown circuitry to protect against excessive junction temperatures.