LM2574N-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574N-12/NOPB is a step-down switching regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It provides a fixed 12 V output with a maximum load current of 500 mA. The device supports an input voltage range from 4 V to 40 V and operates at a typical switching frequency of 52 kHz. Designed for through-hole mounting, it utilizes an 8-pin MDIP package. The component functions as a buck converter and includes integrated features such as a 3-A internal switch, thermal shutdown, and current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage 3-A power switch for efficient step-down conversion
• Includes built-in thermal shutdown and current limiting protection mechanisms
• Supports both standard buck and inverting topology configurations

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring regulated voltage steps
• Pre-regulator stages for linear post-regulators
• Battery-powered equipment utilizing high-efficiency DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number suffix indicates the PDIP-8 package variant rather than surface-mount options. Confirm RoHS compliance status via the manufacturer datasheet. Ensure the ordering code matches the required 12 V fixed output specification. Cross-reference the manufacturer's official documentation to validate the active production status and environmental certifications before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust through-hole solution is required for moderate current applications up to 500 mA. The wide input voltage range accommodates various source conditions. Consider the thermal performance within the MDIP package for heat dissipation requirements. Verify that the 52 kHz switching frequency aligns with the electromagnetic interference constraints of the target design.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM2574xx series, which offers a simplified design approach for non-isolated DC-DC converters. The series is characterized by its simplicity and reliability, utilizing external components primarily for filtering and timing. The LM2574N-12 specifically targets applications needing a stable 12 V rail derived from higher voltage inputs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574HV-12/NOPB: Supports extended input voltage up to 60 V.