LMR33620AQRNXRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR33620AQRNXRQ1 is an automotive-grade synchronous step-down voltage converter from Texas Instruments. It operates with an input voltage range of 3.8 V to 36 V and delivers a maximum output current of 2 A. The device features a fixed 5 V output, adjustable switching frequencies of 400 kHz or 2.1 MHz, and ultra-low quiescent current of 25 uA. It supports output voltages from 1 V to 24 V, includes integrated soft-start and protection features, and functions within a temperature range of -40°C to +125°C. Packaged in a 12-VQFN-HR-12 footprint, it meets AEC-Q100 standards for automotive reliability.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade synchronous buck converter with AEC-Q100 qualification
• Integrated high-side and low-side N-channel power MOSFETs
• Fixed 5 V output option with selectable switching frequencies
• Ultra-low quiescent current for enhanced efficiency

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the official datasheet to ensure correct package type and temperature rating. Confirm that the AEC-Q100 qualification aligns with your project's automotive reliability requirements. Check for moisture sensitivity level handling instructions during assembly. Ensure the fixed 5 V output variant matches your system design needs without requiring external adjustment components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required for automotive applications. Compare switching frequency options based on passive component size constraints. Evaluate thermal performance under expected load conditions. Verify compatibility with existing PCB layout guidelines for the VQFN-HR-12 package. Consider input voltage stability within the 3.8 V to 36 V range for system integration.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SIMPLE SWITCHER family of synchronous step-down converters. It shares architectural similarities with other LMR336xx series devices but offers specific automotive qualifications. The LMR33620 series provides a balance of performance and compactness for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR33620CQ5RNXTQ1: Fixed 5 V output, 2.1 MHz switching frequency, same package and automotive grade.