LM5165XQDGSRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM5165XQDGSRQ1 is an automotive-grade synchronous buck converter from Texas Instruments, designed for high-voltage applications. It operates with an input voltage range of 3 V to 65 V and delivers a maximum output current of 150 mA. The device features a fixed 5 V output and integrates a switching frequency of 600 kHz. It exhibits a typical quiescent current of 10.5 uA during operation. Certified to AEC-Q100 standards, it supports junction temperatures up to +150 C and is housed in a VSSOP-10 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments.
• Wide input voltage capability supporting 3 V to 65 V sources for flexible system integration.
• Integrated synchronous rectification for improved efficiency in step-down conversion.
• High thermal performance allowing operation at junction temperatures up to +150 C.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable 5 V power rails.
• Body control modules operating from wide-range vehicle battery voltages.
• Industrial control units needing isolated or non-isolated high-voltage step-down regulation.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as 'Q' for automotive grade and 'R1' for reel packaging against official Texas Instruments documentation. Confirm that the specific variant matches the required output voltage and package type for your design. Ensure compliance with RoHS directives and check for any recent lifecycle status changes before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from a high-voltage input source between 3 V and 65 V. The 150 mA output current limit suits low-power logic or sensor supply applications. Consider the VSSOP-10 package for space-constrained PCB layouts. Verify that the 600 kHz switching frequency aligns with your electromagnetic interference (EMI) constraints and inductor selection requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM5165 family of synchronous buck converters. The family is characterized by its ability to handle high input voltages while maintaining low quiescent current. The LM5165 series is widely used in automotive and industrial sectors where robust voltage regulation from varying input sources is critical for system stability and efficiency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM5165 variants with different output voltages or packages if the fixed 5 V output does not match the design requirement. Ensure any substitute maintains AEC-Q100 certification if automotive use is intended. Verify pin compatibility and thermal characteristics to avoid redesigning the PCB layout.