LM2676S-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676S-ADJ/NOPB 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 integrates a 1.2V reference, error amplifier, and power switch, operating at a fixed switching frequency of 260kHz. It features thermal shutdown and current limit protection, housed in a TO-263-7 (D2PAK) surface-mount package suitable for industrial temperatures ranging from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a power switch capable of delivering up to 3A output current
• Operates at a fixed 260kHz switching frequency to minimize external component size
• Includes built-in thermal shutdown and cycle-by-cycle current limiting for robust operation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Efficient step-down conversion from standard bus voltages
• Battery-powered equipment requiring high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' indicates lead-free and RoHS compliance. Confirm the 'S' designation corresponds to the TO-263-7 package. Ensure the 'ADJ' variant matches the required adjustable output configuration rather than a fixed voltage option. Cross-reference the manufacturer part number with official datasheets to confirm pinout and electrical specifications before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 260kHz frequency and 3A continuous current capability are required. It is suitable for designs needing an adjustable output within the 1.2V to 37V range. Consider the TO-263-7 package for its thermal performance and surface-mount compatibility. Evaluate input voltage stability against the specified 8V minimum requirement.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM267x series of SIMPLE SWITCHER regulators, which are designed for high-efficiency DC-DC conversion. The series includes variants with different current ratings and output configurations. The LM2676 specifically targets applications requiring 3A output with minimal external components, leveraging integrated power switches to simplify board layout.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SX-ADJ/NOPB: Identical functional specification with alternative packaging suffix.