LM2575-5.0BN

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-5.0BN is a monolithic integrated circuit step-down switching regulator manufactured by Microchip Technology, designed for high-efficiency DC-to-DC conversion. It operates with an input voltage range of 4V to 40V and provides a fixed 5V output capable of driving up to 1A load current. The device utilizes a fixed 52kHz internal oscillator and incorporates frequency compensation, allowing operation with minimal external components. Key electrical specifications include a maximum junction temperature rating of 125°C and a guaranteed output voltage accuracy of ±4%. The component integrates thermal shutdown and current limit protection mechanisms to ensure system reliability under fault conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator and internal frequency compensation to minimize external component count
• Includes built-in thermal shutdown and cycle-by-cycle current limiting for enhanced operational safety
• Provides a fixed 5V output with high line and load regulation performance

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient buck converters replacing linear regulators in power supply designs
• Pre-regulator stages for downstream linear regulators
• Direct conversion from positive voltages to negative voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'BN' against official Microchip documentation to confirm package type and temperature grade, as standard datasheets often list TO-220 or TO-263 variants. Ensure compatibility with RoHS and REACH regulations required for your region. Confirm availability through authorized distributors, as lead times may vary based on manufacturing location changes documented in Product Change Notices (PCN).

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an input voltage between 4V and 40V. It is suitable for applications requiring up to 1A continuous load current without the need for complex feedback network calculations due to its fixed voltage option. Consider the thermal management requirements associated with the specific package variant chosen for the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of switching regulators, which are widely used for simple and efficient step-down voltage conversion. The series is known for reducing heat sink size and cost compared to traditional linear regulators. Microchip Technology continues to support this legacy product line, ensuring availability for industrial and commercial designs that rely on proven buck converter topologies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible alternatives include the LM2592HVS-5.0/NOPB from Texas Instruments and the NCV2575D2T-5R4G from onsemi. Verify pinout compatibility and thermal performance characteristics before substitution to ensure seamless integration into existing PCB layouts.