LM22676TJ-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22676TJ-5.0/NOPB is a SIMPLE SWITCHER step-down voltage regulator manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It operates with an input voltage range of 4.5V to 42V and provides a fixed 5V output at up to 3A. The device integrates a 1.1A switch and features a 500kHz switching frequency. It utilizes TO-263-7 (TO-263 Thin) surface-mount packaging and supports operation from -40°C to +125°C junction temperature.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch eliminates external component requirements for basic buck topologies.
• Fixed 5V output option simplifies design for standard logic supply rails without feedback resistor selection.
• Precision enable pin allows for precise sequencing and system power management control.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring 5V from higher bus voltages
• Power distribution networks in industrial equipment operating within wide input ranges
• General-purpose DC-DC conversion for digital logic and peripheral circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix /NOPB confirms lead-free and RoHS compliance status as per current manufacturer specifications. Confirm the package variant matches the TO-263-7 thin profile rather than standard TO-263 dimensions. Ensure the fixed 5.0V output version aligns with circuit requirements, as adjustable variants exist within the same series. Cross-reference the manufacturer designation between National Semiconductor legacy branding and current Texas Instruments documentation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from inputs up to 42V. The 3A current capability suits moderate load applications. Consider the TO-263-7 package for thermal performance and board space constraints. Verify that the 500kHz frequency meets EMI requirements for the specific application environment compared to lower-frequency alternatives.

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 LM2676 but offers improved efficiency and wider input voltage support. The family includes adjustable versions and other fixed output voltages, all utilizing similar internal control loops and protection features.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22676TJ-ADJ/NOPB serves as the adjustable counterpart within the same package and electrical specification set. LM22676MRE-5.0/NOPB offers the same fixed 5V output in an SO-PowerPAD-8 package for different footprint requirements.