LM2575-3.3BWM-TR

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-3.3BWM-TR is a monolithic integrated circuit step-down switching regulator manufactured by Microchip Technology. It operates as a fixed-output buck converter providing a stable 3.3V output with a maximum load current of 1A. The device accepts an input voltage range from 4V to 40V and utilizes a fixed internal oscillator operating at a switching frequency of 52kHz. It is housed in a 24-SOIC surface-mount package with a width of 7.50mm. The component supports a junction temperature range of -40°C to 125°C and does not include synchronous rectification.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed 52kHz oscillator for simplified external component selection
• Includes internal thermal shutdown and current limiting protection circuits
• Provides high efficiency conversion suitable for standard voltage regulation applications

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC-DC conversion modules
• Pre-regulator stages for linear regulators
• Battery-powered systems requiring efficient step-down topology

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix TR indicates tape-and-reel packaging configuration when sourcing. Confirm the manufacturer designation remains Microchip Technology, noting historical transitions from National Semiconductor or Micrel if applicable to legacy stock. Ensure the part number matches the exact 3.3V fixed output variant within the LM2575 family to avoid confusion with adjustable or other voltage versions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required with up to 1A continuous load capability. The 24-SOIC package is suitable for surface-mount assembly processes. Consider the 52kHz switching frequency for trade-offs between component size and electromagnetic interference. Verify that the input voltage range of 4V to 40V aligns with the system power supply specifications.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of simple switcher regulators, which are designed as direct replacements for traditional three-terminal linear regulators. The series offers improved efficiency over linear counterparts. The BWM suffix typically denotes the SOIC-24 package variant within the Microchip portfolio, distinguishing it from through-hole or TO-263 packages available in the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the LM2575YWM from Microchip Technology. Other manufacturers may offer functionally similar parts, but verification against the official datasheet parameters is required to ensure compatibility.