LM2673S-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673S-ADJ/NOPB is a SIMPLE SWITCHER power module from Texas Instruments, integrating a buck converter topology with a 3A output current capability. It operates within an input voltage range of 8V to 40V and provides an adjustable output voltage from 1.2V to 37V. The device features a fixed switching frequency of 260kHz and supports a junction temperature range from -40°C to +125°C. Packaged in a surface-mount TO-263 (D2PAK) housing with seven pins, it includes internal current limiting for protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates controller, switch, and freewheeling diode into a single monolithic package
• Includes internal current limit circuitry for overload protection
• Operates at a fixed 260kHz switching frequency to minimize external component size

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'S' corresponds to the TO-263 surface mount package rather than the 'T' through-hole variant. Confirm the 'ADJ' designation indicates adjustable output voltage configuration. Ensure compatibility with the required thermal management solutions for the D2PAK footprint during integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust 3A buck solution is needed with minimal external parts count. The fixed frequency operation simplifies filter design compared to variable frequency alternatives. Consider the thermal performance requirements of the TO-263 package relative to the expected load current and ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 series of SIMPLE SWITCHER regulators, designed for high-efficiency step-down applications. It serves as a drop-in replacement for older discrete designs, offering improved reliability and reduced board space. The series is characterized by its integrated power switch and simplified external component requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include the LM2673SD-ADJ/NOPB for surface mount DFN packages or the LM2673T-ADJ/NOPB for through-hole TO-220 installations. Verify that alternative packages meet the same thermal dissipation and electrical specification requirements.