LM2673SX-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SX-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER® step-down voltage regulator featuring an integrated 3A power switch. It operates from an input voltage range of 8V to 40V, providing a fixed 5V output. The device utilizes a 260kHz switching frequency and employs current mode control for rapid transient response. Designed for surface-mount applications in TO-263-7 packages, it includes thermal shutdown and adjustable current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-current power switch eliminates external component requirements
• Current mode control architecture ensures fast transient response
• Built-in thermal shutdown protects against overheating conditions
• Adjustable current limit prevents damage during short-circuit events

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Input conditioning for microprocessors and DSPs
• Battery-powered equipment requiring efficient voltage conversion
• Industrial control system power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number suffix, specifically /NOPB, to confirm lead-free compliance and RoHS status. Confirm the package variant matches the required footprint, as the SX suffix denotes specific surface-mount configurations. Cross-reference the manufacturer datasheet revision to ensure compatibility with design specifications regarding pinout and electrical characteristics before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from higher voltage rails up to 40V. The integrated 3A switch capability suits moderate load applications without external pass transistors. Consider the 260kHz frequency for balancing efficiency and passive component size. Ensure adequate thermal management due to the power dissipation inherent in buck topologies under heavy loads or high input-output differentials.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SIMPLE SWITCHER family, designed to simplify power supply design by integrating essential power components. It serves as a robust solution for general-purpose DC-DC conversion where space and component count are constrained. The series is known for its ease of use and reliable performance in industrial and commercial environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include LM2673SX-5.0/NOPB equivalents from other manufacturers offering identical pinouts and electrical specs. Verify that substitute parts maintain the same 3A current rating and 40V maximum input voltage. Check for compatible switching frequencies to ensure filter component compatibility.