LMS3655LQRNLRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMS3655LQRNLRQ1 is an automotive-grade synchronous step-down DC/DC converter manufactured by Texas Instruments. It operates with an input voltage range of 3.9 V to 36 V and delivers a fixed output voltage of 5 V at up to 5.5 A. The device features a switching frequency of 400 kHz and a typical quiescent current of 7.5 uA. It is housed in a 22-pin VQFN-HR package and supports an operating temperature range from -40°C to +150°C. Certified under AEC-Q100 standards, it includes shutdown functionality for power management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Automotive qualification compliant with AEC-Q100 standards
• Supports wide input voltage ranges up to 36 V
• Includes shutdown control for system power optimization

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Instrument clusters and displays
• ADAS sensor power supplies
• Body control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as 'L' and 'RQ1' against official Texas Instruments documentation to ensure correct configuration. Confirm that the specific ordering code matches the required package type and tape-and-reel specifications. Cross-reference the manufacturer's datasheet for any recent product change notices or lifecycle status updates before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits requiring a robust 5.5 A buck converter for automotive environments. Ensure the application demands a fixed 5 V output and can accommodate a 400 kHz switching frequency. Verify that thermal management solutions are adequate for the VQFN-HR-22 package given the high current capability and extended temperature range requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMS3655-Q1 family of synchronous step-down converters designed specifically for automotive applications. It shares architectural similarities with other members like the LMS3655QRNLTQ1 but may differ in specific suffix configurations. The family targets high-current loads in vehicles where reliability and wide input voltage tolerance are critical.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the official LMS3655-Q1 datasheet for pin-compatible alternatives within the same series. Verify functional equivalence regarding output voltage, current rating, and package dimensions before substituting.