LM2671N-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2671N-5.0/NOPB is a monolithic integrated circuit from the SIMPLE SWITCHER family, functioning as a step-down switching regulator with a fixed 5.0 V output. It delivers up to 500 mA of load current and operates from an input voltage range of 8 V to 40 V. The device utilizes a buck topology at a fixed 260 kHz switching frequency. Packaged in an 8-pin PDIP for through-hole mounting, it features a low quiescent current of 2.5 mA and supports junction temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch enables high-efficiency step-down conversion without external driver components
• Fixed internal switching frequency simplifies external component selection and minimizes filter requirements
• Built-in thermal shutdown and current limit protection ensure operational reliability under fault conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring stable 5 V supply rails
• Pre-regulation stages for linear regulators in battery-powered equipment
• General-purpose DC-DC conversion in industrial control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB confirms lead-free and RoHS compliance status. Confirm the N designation indicates the PDIP-8 through-hole package variant rather than surface-mount options. Ensure the fixed 5.0 V output rating matches the specific design requirement, as adjustable or other fixed voltage variants exist within the same series.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a through-hole solution is required for 500 mA loads with inputs between 8 V and 40 V. The 260 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the thermal performance of the PDIP package if operating near maximum temperature limits or continuous load currents.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2671 series of SIMPLE SWITCHER regulators, designed for straightforward implementation of efficient DC-DC converters. It serves as a robust alternative to linear regulators in applications where input-output voltage differentials would cause excessive heat dissipation in LDOs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2671N-ADJ/NOPB offers adjustable output instead of fixed 5.0 V. LM22671MR-5.0/NOPB provides a surface-mount SO-PowerPad option with higher 500 kHz frequency.