LM22679TJ-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22679TJ-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator featuring a fixed 5 V output and a maximum 5 A load current capability. It operates from an input voltage range of 4.5 V to 42 V with a typical switching frequency of 500 kHz. The device utilizes a TO-263-7 surface-mount package and supports an operating temperature range from -40 °C to +125 °C. It includes integrated features such as current limit, thermal shutdown, and precision enable control for robust power management applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel MOSFETs eliminate the need for external Schottky diodes
• Precision enable pin allows for precise sequencing and system power management
• Built-in thermal shutdown and current limit protection ensure operational reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in industrial equipment
• Distributed power architectures for telecom systems
• Battery-powered portable devices requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation on the datasheet, as the component is produced by Texas Instruments despite the National Semiconductor brand history. Confirm the suffix /NOPB indicates lead-free and RoHS compliance. Ensure the specific package variant matches the required PCB footprint for the TO-263-7 configuration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 5 V output at up to 5 A is required from a wide input voltage range. The 500 kHz switching frequency allows for smaller passive components compared to lower-frequency regulators. Consider the thermal performance of the TO-263 package for heat dissipation requirements in the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM22679 series of SIMPLE SWITCHER regulators, which are designed for high-efficiency DC-DC conversion. The series integrates power switches and control circuitry into a single monolithic IC, simplifying design complexity while maintaining high performance standards for various power supply topologies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22679TJ-ADJ/NOPB offers adjustable output voltage instead of fixed 5 V. LM22679QTJ-5.0/NOPB provides automotive qualification (AEC-Q100) with identical electrical specifications.