LM2575-12BN

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-12BN is a monolithic integrated circuit step-down switching regulator manufactured by Microchip Technology. It operates with an input voltage range of 4V to 40V and provides a fixed 12V output at up to 1A load current. The device utilizes a 52kHz internal oscillator frequency for efficient DC-to-DC conversion. It features built-in current limiting, thermal shutdown, and frequency compensation. The component is housed in a TO-220-5 package and supports operation across a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 52kHz fixed-frequency oscillator for simplified external component requirements
• Includes internal current limit and thermal shutdown protection circuits
• Provides a fixed 12V output configuration for standard buck converter designs

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down switching regulators (buck converters)
• Efficient pre-regulators for linear post-regulators
• Positive-to-negative voltage inversion applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'BN' against official Microchip documentation to confirm pinout compatibility and package dimensions. Ensure the selected variant matches the required operating temperature range and lead-free status. Cross-reference datasheet revisions to confirm availability of updated application notes and reference designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from a variable input source between 4V and 40V. Consider the TO-220-5 package for through-hole mounting and thermal dissipation needs. Evaluate the 1A continuous current capability against system load requirements before finalizing the design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of monolithic switching regulators designed for easy implementation of step-down topologies. The series offers various fixed voltage options and adjustable configurations. The LM2575-12BN specifically targets applications requiring a stable 12V rail with minimal external components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official substitution guides for equivalent parts such as the LM2592 series or other compatible buck regulators. Verify pin compatibility and electrical specifications before replacing the original component.