LM2676T-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676T-ADJ is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator from Texas Instruments. It operates with an input voltage range of 8V to 40V and provides an adjustable output voltage between 1.2V and 37V. The device features a fixed switching frequency of 260kHz, enabling the use of small external components. It includes internal compensation for stability and offers thermal shutdown protection. Packaged in a TO-220-7 case, it supports continuous output currents up to 3A with a peak switch current capability of 4.5A.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated internal compensation simplifies design by reducing the number of required external components.
• Fixed 260kHz switching frequency allows for compact passive component selection.
• Built-in thermal shutdown protects the device during overtemperature conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial systems
• High-efficiency step-down conversion for battery-powered equipment
• Distributed power supply architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free and RoHS compliance when sourcing. Confirm the package type matches the required thermal management strategy, as the TO-220 form factor differs significantly from surface-mount variants. Ensure the application circuit utilizes the specified feedback resistor network to achieve the desired adjustable output voltage range accurately.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model for applications requiring robust through-hole mounting and high current handling capabilities. The adjustable output variant offers flexibility for custom voltage requirements compared to fixed-output versions. Consider the thermal performance of the TO-220 package relative to the expected load current and ambient temperature conditions to ensure reliable operation without excessive heatsinking.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM267x series of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. The series includes various packages and fixed or adjustable output options. The LM2676T-ADJ specifically targets designs needing 3A output current with an adjustable voltage setting, distinguishing it from fixed-voltage counterparts within the same family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other LM2676 variants with different output configurations or packages, such as LM2676S-ADJ/NOPB for surface mount applications. Verify pin compatibility and thermal characteristics when substituting with similar buck regulators from the same manufacturer or competitors.