LM2676SX-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676SX-5.0 is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8 V to 40 V and provides a fixed 5 V output at up to 3 A. The device features a switching frequency of 260 kHz and utilizes a TO-263-7 surface-mount package. It supports operation across a temperature range of -40 °C to +125 °C, with a typical static current of 4.2 mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology for efficient step-down regulation
• Built-in internal switch rated for 3 A continuous output current
• Fixed 5 V output option eliminates external feedback resistor requirements
• Thermal shutdown protection safeguards against overheating conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital logic circuits
• Power supply conditioning for embedded microcontroller systems
• Battery-powered equipment requiring stable DC voltage conversion
• Industrial control modules needing isolated power segments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the /NOPB suffix to ensure compliance with RoHS standards and confirm lead-free manufacturing status. Cross-reference the manufacturer datasheet to validate the specific output voltage variant matches the design requirement. Confirm the package type corresponds to the intended PCB footprint before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from an 8 V to 40 V input source. The 260 kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure the thermal environment supports the TO-263-7 package dissipation capabilities for the expected load current.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the SIMPLE SWITCHER family, designed for simplified power management applications. It integrates the controller, driver, and power switch into a single IC, reducing external component count. The series offers various fixed voltage outputs to accommodate common system rails without complex feedback networks.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SX-5.0/NOPB serves as the direct lead-free compliant substitute for older non-compliant versions.