LM2676T-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676T-5.0/NOPB is a SIMPLE SWITCHER® high-efficiency 3A step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 260 kHz. It provides a fixed 5V output with a maximum input voltage of 40V and supports an output current of 3A. The device utilizes a TO-220-7 through-hole package and operates within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for 3A continuous load current
• Fixed internal switching frequency eliminates external timing components
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for distributed power architectures
• Efficient buck conversion from standard 12V or 24V bus voltages
• Pre-regulator stages for downstream linear regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's datasheet. Confirm the 'T' designation corresponds to the TO-220-7 through-hole package variant rather than surface-mount options. Ensure the specific voltage grade matches the required 5V fixed output specification for the target circuit design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust through-hole solution is required for high-current applications up to 3A. The fixed 260 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the thermal performance of the TO-220-7 package for heat dissipation requirements in enclosed environments.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2676 family of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. It serves as a direct replacement for older legacy parts like the LM2576 series but offers improved efficiency and higher switching frequencies. The NOPB suffix indicates environmental compliance updates over earlier non-compliant versions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include other LM2676 variants with different output voltages or adjustable configurations, provided the electrical parameters match the application requirements.