LM2574N-005

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574N-005 is a monolithic integrated circuit switching voltage regulator manufactured by onsemi, belonging to the LM2574 series. It functions as a step-down (buck) converter designed for easy and convenient implementation in DC-to-DC power supply applications. The device provides a fixed output voltage of 5V with a maximum output current capability of 500 mA. It operates within an input voltage range of 4.75 V to 40 V and supports a switching frequency of 58 kHz. The component is housed in an 8-pin PDIP package and is rated for operation across an extended temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology simplifies design requirements
• Fixed 5V output configuration ensures stable voltage regulation
• Supports high input voltage up to 40V for versatile power sourcing
• Operates reliably across industrial temperature extremes

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down DC-DC conversion circuits
• Pre-regulator stages for linear regulators
• Efficient battery-powered system power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix code against official datasheets to confirm the exact output voltage variant, as standard naming conventions typically use numeric codes like '5' or '5.0' for 5V outputs. Confirm the manufacturer origin, as this part number may also be produced under license by Texas Instruments. Ensure the PDIP-8 through-hole package matches your PCB footprint requirements before ordering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from a higher input voltage rail. It is suitable for applications needing moderate current levels up to 500 mA without external feedback adjustments. Consider the thermal performance in the PDIP package if operating near maximum load conditions. Verify that the 58 kHz switching frequency aligns with your electromagnetic interference constraints and inductor selection guidelines.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574 family of simple switcher regulators, widely used for efficient power conversion. The 'N' suffix indicates the PDIP-8 through-hole package, while the '005' designation specifies the 5V fixed output version. It serves as a robust alternative to linear regulators in applications where efficiency and heat dissipation are critical concerns.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574N-5G (onsemi equivalent), LM2574N-5.0/NOPB (Texas Instruments equivalent). Verify pin compatibility and thermal characteristics when substituting.