LM2679S-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2679S-5.0/NOPB is a SIMPLE SWITCHER® 5A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed 5V output. The device features a 260kHz switching frequency, enabling the use of compact external components. It includes adjustable current limiting, thermal shutdown, and soft-start capabilities. The regulator supports surface-mount installation in a TO-263-8 package and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 5A power switch for high-current step-down conversion
• Fixed 260kHz internal oscillator for efficient component sizing
• Adjustable peak current limit for flexible protection settings
• Built-in thermal shutdown and soft-start functionality

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient pre-regulators for linear voltage regulators
• High-efficiency battery chargers
• Point-of-load DC/DC conversion modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., /NOPB) against the manufacturer's datasheet to confirm RoHS compliance and lead-free status. Ensure the package type matches the intended PCB footprint. Confirm availability status as older revisions may be discontinued or subject to last-time buys.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model for applications requiring a fixed 5V output from higher input voltages up to 40V. Consider the TO-263-8 package for adequate thermal dissipation at full load. Verify that the required output voltage tolerance and ripple specifications align with the system requirements before finalizing the design.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the SIMPLE SWITCHER® family of monolithic integrated circuits designed for straightforward buck converter implementations. The series offers various fixed voltage options and adjustable versions to accommodate diverse power management needs across industrial and consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include LM2679S-5.0/NOPB for updated environmental compliance. Other compatible variants within the same family include LM2679T-5.0/NOPB for through-hole mounting or LM2679SD-5.0/NOPB for VSON packaging.