LM22676MR-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22676MR-ADJ/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments. It operates with an input voltage range of 4.5V to 42V and provides a fixed output voltage of 3.3V at up to 3A output current. The device features a 500kHz switching frequency, adjustable output down to 1.258V in some configurations, and a typical quiescent current of 3.4mA. It supports operation from -40°C to +125°C junction temperature and utilizes an 8-SO-PowerPAD package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side switch for efficient buck conversion
• Precision enable pin for controlled startup sequencing
• Internal frequency compensation simplifies external component selection
• Thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Industrial control power supplies
• Distributed power architectures
• Battery-powered equipment requiring wide input range

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and tape/reel or tube packaging configuration against the manufacturer's latest datasheet. Confirm RoHS compliance status and ensure the ordering part number matches the required output voltage variant. Cross-reference the package marking code to prevent counterfeit components during acquisition.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required within a 42V input system. Consider the SO-PowerPAD thermal performance for high-current applications. Ensure the design accounts for the 500kHz switching frequency requirements for inductor and capacitor selection. Verify that the 3A continuous current capability meets the load demands under all operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM22676 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM22674 (500mA) and LM22677 (5A) variants. The MR suffix denotes the 8-SO-PowerPAD package. The NOPB indicates lead-free and RoHS-compliant construction. It serves as a mid-range solution between lower and higher current regulators in the series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22676MRE-5.0/NOPB offers a fixed 5.0V output option within the same package family.