LM2574-12YN

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574-12YN is a fixed-output step-down switching regulator manufactured by Microchip Technology. It operates as a buck converter with a fixed 12 V output voltage and supports an output current of up to 500 mA. The device accepts an input voltage range from 4 V to 40 V and functions at a switching frequency of 52 kHz. It is housed in an 8-PDIP package and is rated for operation within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a monolithic synchronous rectifier for efficient step-down conversion
• Includes internal frequency compensation to minimize external component count
• Features thermal shutdown protection for operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for linear post-regulators
• Battery-powered systems requiring voltage reduction

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation on the datasheet, as the LM2574 family is produced by multiple vendors including Texas Instruments and onsemi. Confirm that the specific suffix 'YN' corresponds to the Microchip Technology 8-PDIP package variant. Ensure the component meets RoHS compliance requirements if mandated by the target application standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from a higher DC bus voltage. The 500 mA current capability suits low-power applications. Consider the 8-pin DIP package for through-hole prototyping or manufacturing. Verify that the 52 kHz switching frequency aligns with electromagnetic interference constraints and inductor selection guidelines.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574 series of SIMPLE SWITCHER regulators. The series provides a complete solution for step-down conversion, integrating the switch, control logic, and protection circuits. The LM2574-12YN specifically denotes the 12 V fixed output version in the PDIP-8 package format offered by Microchip Technology.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574-12N (onsemi) offers equivalent electrical specifications in a PDIP-8 package. LM2574M-12/NOPB (Texas Instruments) provides the same functionality in a SOIC-Wide-14 surface-mount package.