LM2575-5.0BWM

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-5.0BWM is a monolithic integrated circuit designed for step-down (buck) switching regulator applications. Manufactured by Microchip Technology, this device provides a fixed 5V output capable of driving a 1A load with excellent line and load regulation. It operates within a wide input voltage range of 4V to 40V and utilizes a 52kHz fixed-frequency internal oscillator. The component is housed in a 24-SOIC package and includes built-in frequency compensation, thermal shutdown, and current limit protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Provides high-efficiency replacement for linear regulators with minimal external components
• Includes internal frequency compensation and fixed-frequency oscillator
• Features thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulator designs
• Efficient pre-regulators for standard 5V linear regulators
• Directly controllable power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer source, as the LM2575 series has transitioned from National Semiconductor to Texas Instruments and subsequently to Microchip Technology through acquisitions. Confirm that the datasheet provided matches the Microchip specification rather than legacy TI or Micrel documents. Ensure the 24-pin SOIC package variant aligns with the design requirements, as other pinouts exist within the family.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 5V output at 1A is required from an input voltage between 4V and 40V. The 52kHz switching frequency allows for the use of standard, readily available inductors, simplifying the bill of materials. Consider the 24-SOIC package for surface-mount assembly needs where higher thermal dissipation compared to smaller packages is beneficial.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 series of simple 1A buck regulators. While earlier versions were produced by National Semiconductor and later Texas Instruments, Microchip Technology now holds the rights to this product line. The BWM suffix specifically denotes the 24-pin SOIC package variant with a 5.0V fixed output, distinguishing it from TO-263 or TO-220 packaged counterparts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575-5.0BWM-TR

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum output current capability of the LM2575-5.0BWM?

The device is guaranteed to drive a 1A load under specified conditions.

Does the LM2575-5.0BWM require external frequency compensation?

No, the IC includes internal frequency compensation, requiring only a minimum number of external components for operation.