LM2676SDX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676SDX-ADJ/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 260 kHz. It accepts an input voltage range of 8 V to 40 V and provides an adjustable output voltage between 1.2 V and 37 V with a maximum continuous output current of 3 A. The device utilizes a 14-VSON (5x6 mm) surface-mount package. It features integrated protection mechanisms including thermal shutdown and current limiting, ensuring reliable operation within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch eliminates the need for external inductors or diodes in standard buck configurations.
• Fixed 260 kHz switching frequency allows for the use of small passive components.
• Adjustable output voltage capability via external resistor divider network.
• Built-in thermal shutdown and cycle-by-cycle current limiting protect against overload conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control systems with wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free and RoHS compliance per manufacturer specifications. Confirm the SDX designation corresponds to the 14-VSON tape-and-reel packaging format. Ensure the ADJ variant matches the required adjustable output topology rather than fixed-voltage alternatives within the same series.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output is required within the 8V to 40V input window. The 3A current rating suits moderate load applications. Consider the 14-VSON package size constraints for PCB layout. Compare against fixed-output variants if the application requires a specific voltage level without external feedback resistors.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2676 family of SIMPLE SWITCHER regulators, which are designed for high-efficiency DC-DC conversion. The LM2676 series typically includes fixed-output options alongside the adjustable version. The SDX package variant distinguishes it from through-hole TO-220 or larger D2PAK packages found in other members of the family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SDX-ADJ/NOPB is the direct lead-free replacement for the non-compliant LM2676SDX-ADJ. Other family members like LM2676SX-ADJ offer different packaging but similar electrical characteristics.