LMS3655NQRNLRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMS3655NQRNLRQ1 is a synchronous step-down DC-DC converter from Texas Instruments, designed for automotive applications under the AEC-Q100 qualification. It operates with an input voltage range of 3.9 V to 36 V and delivers up to 3.5 A of output current. The device features a fixed switching frequency of 400 kHz and supports adjustable frequencies between 250 kHz and 500 kHz. It provides a fixed 3.3 V output in a 22-pin VQFN-HR package, ensuring efficient power management within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck topology for high-efficiency step-down conversion
• Automotive-grade reliability certified to AEC-Q100 standards
• Supports flexible switching frequency adjustment between 250 kHz and 500 kHz
• Utilizes VQFN-HR package with wettable flanks for enhanced thermal performance

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 'N' indicates the fixed 3.3 V output variant, distinct from other adjustable or fixed voltage options within the LMS3655 family. Confirm the 'R' suffix corresponds to the reel packaging format required for automated assembly. Ensure the component meets RoHS3 compliance specifications as documented in the official datasheet before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a stable 3.5 A supply at 3.3 V is required for automotive electronics. The 36 V input tolerance accommodates standard automotive bus architectures. Consider the 22-pin VQFN-HR package for designs prioritizing thermal dissipation and board space efficiency. Validate that the 400 kHz nominal frequency aligns with EMI constraints and inductor selection requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LMS365x-Q1 series of synchronous step-down converters. It shares architectural similarities with models like the LMS3655AQRNLRQ1 but differs in output configuration. The series is engineered for robust automotive environments, offering integrated protection features and high efficiency across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMS3655NQRNLTQ1 (Cut Tape variant)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the fixed output voltage of the LMS3655NQRNLRQ1?

The LMS3655NQRNLRQ1 provides a fixed output voltage of 3.3 V.

Is the LMS3655NQRNLRQ1 suitable for harsh automotive environments?

Yes, it is qualified to AEC-Q100 standards and operates reliably within a temperature range of -40°C to +125°C.