LM2673SDX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SDX-3.3/NOPB is a SIMPLE SWITCHER step-down voltage regulator manufactured by Texas Instruments, designed for surface-mount applications in a 14-VSON package. It provides a fixed 3.3V output with a maximum current capacity of 3A. The device operates from an input voltage range of 8V to 40V and features a switching frequency of 260kHz. It supports junction temperatures from -40°C to +125°C and includes integrated current limiting for protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated current limit protects against short circuits and overloads
• Fixed 3.3V output eliminates external resistor networks
• High efficiency buck topology reduces power dissipation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for microprocessors and FPGAs
• Battery-powered equipment requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance as per manufacturer specifications. Ensure the 'SDX' designation matches the required 14-VSON surface-mount package variant. Cross-reference the specific part number against official Texas Instruments documentation to confirm availability and manufacturing status before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output at 3A is required within a compact surface-mount footprint. The 260kHz switching frequency allows for smaller passive components compared to lower-frequency regulators. Verify that the input voltage remains within the 8V to 40V range and that thermal management suits the 14-VSON package constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 SIMPLE SWITCHER family, which offers high-efficiency DC-DC conversion. The SDX variant specifically denotes the small outline VSON package, distinguishing it from TO-263 or TO-220 through-hole versions like the LM2673S or LM2673T series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include other LM2673 variants with matching packages or electrical ratings, such as the LM2673SD-3.3/NOPB. Ensure any replacement maintains the 3A output current capability and 14-VSON form factor.