LM2576-5.0BT

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576-5.0BT is a monolithic integrated circuit providing the active functions for a step-down (buck) switching regulator. Manufactured by Microchip Technology, this device delivers a fixed 5.0V output with a guaranteed maximum load current of 3A. It operates from a wide input voltage range of 4V to 40V and utilizes a 52kHz fixed-frequency internal oscillator. The component is housed in a TO-220-5 package designed for through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 5.0V output voltage with high line and load regulation
• Integrated 52kHz fixed-frequency internal oscillator
• Built-in thermal shutdown and cycle-by-cycle current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• On-card switching regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer designation on the datasheet, as the LM2576 series has been produced by multiple vendors including Texas Instruments and National Semiconductor. Confirm that the TO-220-5 package matches your board layout requirements. Ensure the fixed 5.0V output aligns with system needs, as adjustable variants exist within the same family.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a stable 5V supply is required from an input voltage between 4V and 40V. It is suitable for applications needing up to 3A of continuous current. Consider the TO-220-5 package for through-hole assembly and adequate thermal dissipation without excessive heatsinking in moderate load scenarios.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of simple 3A buck voltage regulators. The series includes fixed output versions at 3.3V, 5V, and 12V, alongside an adjustable version. The LM2576-5.0BT specifically provides the 5.0V fixed output option, distinguishing it from the adjustable LM2576-ADJ variant which allows output voltages from 1.23V to 37V.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576T-5.0/NOPB (Texas Instruments)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2576-5.0BT?

The maximum input voltage is 40V.

Does the LM2576-5.0BT support adjustable output voltage?

No, the LM2576-5.0BT provides a fixed 5.0V output. Adjustable versions are designated as LM2576-ADJ.