LM2679T-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2679T-5.0/NOPB is a monolithic integrated circuit from the SIMPLE SWITCHER family, functioning as a step-down (buck) switching voltage regulator. It provides a fixed 5 V output with a maximum load current of 5 A. The device operates within an input voltage range of 8 V to 40 V and utilizes a 260 kHz switching frequency. Designed for through-hole installation in a TO-220-7 package, it features adjustable current limiting and achieves efficiencies exceeding 90%. The component supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-current switch capable of driving up to 5 A loads
• Fixed 5 V output option with adjustable current limit protection
• High efficiency performance utilizing low on-resistance internal switch
• Built-in thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Pre-regulator stages for linear regulators
• Battery-powered equipment requiring efficient voltage conversion
• Industrial control power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance. Confirm the 'T' designation corresponds to the TO-220-7 through-hole package variant rather than surface-mount options. Ensure the specific output voltage matches the required system design, as other variants exist for different voltages.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a robust through-hole solution is required for high-current applications. The fixed 5 V output simplifies design compared to adjustable versions. Consider the thermal requirements of the TO-220 package for heat dissipation at full 5 A load. Verify input voltage stability within the 8 V to 40 V operational window.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2679 series of SIMPLE SWITCHER regulators. It shares core topology and performance characteristics with other members like the LM2679SD and LM2679SX, differing primarily in packaging and mounting style. The series is designed for general-purpose DC/DC conversion with simplified external component requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include LM2679T-5.0/NOPB. Other series members such as LM2679SD-5.0 or LM2679SX-5.0 offer similar electrical performance but utilize surface-mount packages (VSON or SSOP). Cross-package substitution requires PCB layout modification.