LM5165YQDGSTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM5165YQDGSTQ1 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 provides a fixed 3.3 V output at up to 150 mA. The device features ultra-low quiescent current of 10.5 µA and supports switching frequencies up to 600 kHz. It is qualified to AEC-Q100 standards and functions within a junction temperature range of -40°C to +150°C. The component is housed in a compact 10-VSON package with an exposed pad.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Wide input voltage capability supporting 3 V to 65 V sources
• Ultra-low quiescent current consumption for energy efficiency
• Integrated synchronous rectification for improved power conversion

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Body control modules
• Telematics units
• ADAS sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'YST' against the official datasheet to confirm pinout and thermal pad configuration. Ensure the selected variant matches the required automotive grade and output voltage tolerance. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status prior to integration into production assemblies.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 65 V is required in a small footprint. It is suitable for designs needing low standby power consumption due to its ultra-low IQ. Consider the 150 mA output limit and fixed 3.3 V output when sizing external components. Evaluate thermal performance requirements given the high maximum junction temperature rating.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5165 family of synchronous buck converters. The family includes variants with different output voltages and packages. The LM5165 series is engineered for high-voltage DC-DC conversion in demanding environments. Other members include LM5165X and LM5165Y with varying suffixes indicating package or temperature grades.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5165YDRCTQ1

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM5165YQDGSTQ1?

The maximum input voltage is 65 V.

Is the LM5165YQDGSTQ1 suitable for automotive applications?

Yes, it is qualified to AEC-Q100 standards for automotive use.

What is the fixed output voltage of this converter?

The fixed output voltage is 3.3 V.