LM2676SDX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676SDX-3.3/NOPB is a SIMPLE SWITCHER® high-efficiency 3A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed 3.3V output at up to 3A current. The device features a 260kHz switching frequency and utilizes a 14-VSON (5x6mm) surface-mount package. It includes internal compensation, thermal shutdown, and current limit protection for robust performance in compact designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch eliminates the need for external components
• Fixed 260kHz switching frequency reduces passive component size
• Internal frequency compensation simplifies design implementation
• Thermal shutdown and current limit 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 operating from 24V or 48V buses
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SDX' corresponds to the 14-VSON package variant rather than the standard D2PAK. Confirm RoHS compliance status as indicated by the NOPB designation. Ensure ordering quantities match distributor reel specifications for the tape-and-reel format. Cross-reference the manufacturer datasheet revision date to confirm pinout and electrical parameter consistency before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from an 8V to 40V input source. The 14-VSON package is suitable for applications prioritizing board space efficiency over the larger TO-263 footprint. Consider the 260kHz switching frequency trade-off between component size and electromagnetic interference. Verify that the load current does not exceed the 3A continuous rating under maximum ambient temperature conditions.

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 buck conversion. The SDX suffix denotes the 14-pin VSON package, distinguishing it from the S/D/SX variants that use D2PAK or SOIC packages. The NOPB suffix indicates lead-free construction and compliance with environmental directives. This series is widely used in general-purpose power management applications requiring moderate current capabilities.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SD-3.3/NOPB: Identical functional equivalent in the same 14-VSON package. LM2676SX-3.3/NOPB: Compatible alternative but utilizes a different TO-263/D2PAK package requiring PCB layout adjustments. LM2676T-3.3/NOPB: Through-hole alternative with distinct mechanical form factor.