LM5165YQDGSRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM5165YQDGSRQ1 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 a low quiescent current of 10 µA and supports switching frequencies up to 600 kHz. It is qualified under AEC-Q100 standards and functions within a junction temperature range of -40°C to +150°C. The component is housed in a 10-VSSOP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for improved efficiency in step-down conversion
• Automotive qualification ensuring reliability in harsh operating environments
• Wide input voltage capability suitable for diverse power supply architectures

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment system power distribution
• Body control module voltage regulation
• Industrial sensor node power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Y' confirms the fixed 3.3 V output voltage variant. Ensure the 'Q1' designation aligns with required automotive quality standards. Confirm the 'DGSR' package code matches the intended VSSOP-10 footprint and reel quantity specifications for the manufacturing process.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V rail is required from a wide input range. The synchronous design offers better efficiency than non-synchronous alternatives at moderate loads. Consider the 150 mA limit against peak load requirements. The wide temperature range supports operation in unheated engine compartments or exterior modules.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5165 family of high-voltage synchronous buck converters. It shares core topology with adjustable variants but differs in internal feedback network configuration to provide a fixed output. The Q1 suffix denotes automotive grade compliance, distinguishing it from commercial grade counterparts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5165XQDRCTQ1 (Adjustable output variant)

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM5165YQDGSRQ1 adjustable?

No, the 'Y' suffix indicates a fixed 3.3 V output voltage configuration.

What is the maximum switching frequency?

The device supports switching frequencies up to 600 kHz.