LM2575-5.0YN

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575-5.0YN is a monolithic integrated circuit step-down switching regulator manufactured by Microchip Technology, designed for efficient DC-to-DC conversion. It operates with an input voltage range of 4V to 40V and provides a fixed 5V output at up to 1A load current. The device utilizes a 52kHz internal oscillator frequency and supports through-hole installation in a PDIP-16 package. It features built-in frequency compensation, thermal shutdown, and current limiting protection, requiring minimal external components for operation within a -40°C to +85°C operating temperature range.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator and internal frequency compensation to simplify design requirements.
• Includes comprehensive protection mechanisms such as thermal shutdown and per-cycle current limiting.
• Supports easy replacement of linear regulators with significantly reduced heat dissipation needs.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient step-down DC-DC power supply designs
• Pre-regulation for downstream linear regulators
• Positive-to-negative voltage inversion circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'YN' against official Microchip documentation to confirm the PDIP-16 through-hole package variant. Ensure compatibility with required thermal management solutions given the through-hole form factor. Confirm RoHS compliance status for the specific manufacturing batch prior to integration into final assemblies.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from a wide input voltage range up to 40V. The through-hole PDIP-16 package is suitable for applications prioritizing mechanical robustness or legacy board layouts over surface mount density. Ensure the application environment remains within the specified -40°C to +85°C operational temperature limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of switching regulators, which are widely recognized for their simplicity and reliability in buck converter applications. The series offers various fixed voltage outputs and adjustable versions across different package types, including TO-220, TO-263, and DIP formats, catering to diverse industrial and commercial power management needs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2592HVS-5.0/NOPB (Texas Instruments) is listed as a similar alternative. Verify pinout compatibility and thermal performance characteristics before substitution.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the typical switching frequency of the LM2575-5.0YN?

The device operates at a typical switching frequency of 52 kHz.

Does the LM2575-5.0YN support synchronous rectification?

No, the LM2575-5.0YN does not feature synchronous rectification; it uses a standard non-synchronous buck topology.