LM22673QTJ-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22673QTJ-ADJ/NOPB is a monolithic integrated circuit from the Texas Instruments SIMPLE SWITCHER family, functioning as a step-down switching voltage regulator. It operates with an input voltage range up to 40V and delivers a continuous output current of 3A. The device utilizes a fixed 500kHz switching frequency and features adjustable output voltage capability. Packaged in a TO-263 (DPAK) surface-mount housing with seven pins, it supports operation across an extended temperature range from -40°C to +125°C. Key internal protections include adjustable soft-start and cycle-by-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch enables compact buck converter designs without external components
• Adjustable soft-start limits inrush current during startup sequences
• Cycle-by-cycle current protection safeguards against overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient voltage conversion
• Industrial control systems operating in harsh environments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as NOPB to ensure lead-free compliance and specific package variants. Confirm that the TO-263-7 footprint matches your PCB layout requirements. Cross-reference the datasheet revision date to ensure compatibility with your design specifications. Ensure thermal management strategies align with the maximum junction temperature ratings provided in the official documentation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 3A output current is required within a 40V input limit. The adjustable output voltage feature allows flexibility for various load requirements compared to fixed-voltage variants. Consider the TO-263 package for its thermal dissipation capabilities relative to smaller packages. Verify that the 500kHz frequency meets EMI constraints for your specific application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM2673/LM22673/LM1673 series, differentiated primarily by their specified operating temperature ranges. The LM22673 variant is rated for industrial temperatures (-40°C to +125°C), whereas the LM1673 covers military grades and the LM2673 may have different packaging or qualification standards. This specific model represents the adjusted output version within the automotive-grade qualified SIMPLE SWITCHER lineup.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22673TJ-ADJ/NOPB shares identical electrical characteristics and pinout but uses a standard TO-263 package instead of the QTJ variant. LM22673QMRE-ADJ/NOPB offers the same functionality in an SO-PowerPAD-8 package for different board space constraints.