LM22673MRX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22673MRX-ADJ/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator featuring an integrated power switch. It supports an input voltage range of 4.5 V to 42 V and delivers up to 3 A output current. The device operates at a fixed switching frequency of 500 kHz with adjustable output voltage. It utilizes an SO-PowerPAD-8 package for surface mount installation. Key electrical parameters include a minimum operating temperature of -40 °C, a maximum of +125 °C, and a typical quiescent current of 3.4 mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-efficiency power switch within the buck topology
• Provides adjustable output voltage capability via external feedback network
• Incorporates built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial equipment power distribution systems
• Automotive electronics subsystems
• Distributed power architectures in computing infrastructure

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches ADJ/NOPB to ensure adjustable output functionality and lead-free compliance. Confirm the package designation corresponds to MRX (SO-PowerPAD-8) rather than MRE or other variants. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision status before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input voltage up to 42 V and continuous output current of 3 A are required. The 500 kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure the application environment remains within the specified -40 °C to +125 °C operating temperature range for reliable performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM22673 series of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2673 but offers higher integration and switching frequencies. The family includes fixed and adjustable output variants across different packages such as TO-263 and SOIC, providing flexibility for various power management designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22673MRE-ADJ/NOPB: Identical functional specifications with a different SOIC-8 package variant.