LM22679QTJE-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22679QTJE-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator designed for high-efficiency power conversion. It operates with an input voltage range of 4.5 V to 42 V and provides a fixed 5 V output capable of delivering up to 5 A of load current. The device integrates a 500 kHz switching frequency, enabling the use of compact external components. It features an automotive-grade qualification (AEC-Q100) and is housed in a TO-263-7 surface-mount package. The regulator supports operation across a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for robust performance in vehicle environments.
• Integrated high-side N-channel MOSFET simplifies design by reducing the need for external discrete components.
• Fixed 5 V output configuration ensures stable voltage regulation without requiring external feedback resistors.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable 5 V power rails
• Industrial control modules operating within wide input voltage ranges
• Distributed power architectures in telecommunications equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix QTJE corresponds to the required automotive grade and tape-and-reel packaging format. Confirm that the 5.0 variant matches the target fixed output voltage requirement. Ensure the TO-263-7 footprint aligns with the printed circuit board layout specifications. Check for any regional compliance certifications relevant to the deployment environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from a wide input voltage source up to 42 V. The 5 A current capability suits applications needing moderate power delivery without complex parallel configurations. The integrated switch reduces bill-of-materials complexity compared to controller-based solutions. Consider thermal management requirements due to the power dissipation inherent in buck topologies at higher currents.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM22679 family of SIMPLE SWITCHER regulators, which are known for their ease of use and high efficiency. The QTJE suffix indicates an automotive-qualified version packaged in a leadless TO-263-7 case. It differs from the standard LM22679TJE series by meeting stricter automotive reliability standards while maintaining similar electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

• LM22679TJE-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM22679QTJE-5.0/NOPB synchronous?

No, the LM22679 uses a high-side N-channel MOSFET but does not feature a synchronous low-side rectifier; it typically employs an external Schottky diode for freewheeling.

What is the maximum input voltage for this regulator?

The maximum input voltage supported by the LM22679QTJE-5.0/NOPB is 42 V.