LM2673SD-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SD-5.0/NOPB is a fixed-output buck switching regulator from Texas Instruments' SIMPLE SWITCHER family, designed for high-efficiency DC-DC conversion. It integrates a 3A power switch and operates at a fixed 260kHz switching frequency to minimize external component size. The device provides a stable 5V output with an input voltage range of 8V to 40V. Packaged in a compact 14-VSON format, it supports junction temperatures up to 125°C and includes built-in thermal shutdown and current limiting for robust operation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 3A power switch for direct load driving without external pass transistors
• Fixed 260kHz switching frequency enables the use of small inductors and capacitors
• Includes comprehensive protection features such as thermal shutdown and current limit
• Requires minimal external components to achieve high efficiency in a compact footprint

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 within wide input voltage ranges
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's latest documentation. Ensure the 14-VSON package variant matches your PCB layout requirements. Cross-reference the datasheet revision date to confirm pinout and electrical characteristics remain consistent with your design specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an 8V to 40V input source. It is suitable for designs prioritizing board space savings due to its small VSON package. Consider the 260kHz frequency for balancing efficiency and component size. Ensure the application does not require synchronous rectification, as this model uses a non-synchronous topology.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 series of simple switcher regulators, which are known for ease of design and high performance. The SD suffix indicates the surface-mount VSON package, distinguishing it from through-hole or larger TO-263 variants like the LM2673T or LM2673S. It serves as a cost-effective solution for medium-current applications compared to higher-current counterparts in the same family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements within the same package may include other LM2673 variants with different output voltages or adjustment capabilities, provided the electrical parameters match. Verify that any substitute maintains the 3A current rating and 260kHz frequency to ensure circuit stability.