LMR33630AQRNXTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR33630AQRNXTQ1 is an automotive-grade synchronous step-down DC/DC 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 3 A. The device features a fixed switching frequency of 400 kHz and supports adjustable output voltages between 1 V and 24 V. It exhibits a typical quiescent current of 24 uA and functions within a temperature range of -40°C to +125°C. The component is housed in a VQFN-HR-12 package and holds AEC-Q100 qualification for automotive applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Integrated synchronous buck topology enabling efficient power conversion without external diodes
• Wide input voltage capability supporting various automotive bus architectures
• Compact VQFN-HR-12 package design optimized for space-constrained PCB layouts

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment system power distribution
• Telematics control unit voltage regulation
• ADAS sensor module power supply conditioning
• Body control module auxiliary power generation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TQ1' confirms the tape-and-reel packaging format and automotive grade designation. Ensure compatibility with the target PCB footprint for the VQFN-HR-12 package. Confirm that the 400 kHz switching frequency aligns with electromagnetic interference requirements for the intended application environment. Validate that the input voltage range covers the minimum and maximum operating conditions of the power source.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when automotive certification is mandatory and a 3 A load capacity is required. The fixed 400 kHz frequency offers a balance between component size and efficiency compared to higher frequency alternatives. Consider the VQFN-HR-12 package if board space is limited but thermal performance remains critical. Compare against other LMR33630 variants if different switching frequencies or shutdown pin configurations are needed for the specific circuit design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMR33630 family of SIMPLE SWITCHER converters, designed for robust performance in demanding environments. The 'A' variant typically denotes specific electrical characteristics such as the 400 kHz switching frequency, distinguishing it from other family members like the B or C variants which may offer different frequencies. The Q1 suffix indicates automotive qualification, ensuring adherence to strict reliability and quality standards required by original equipment manufacturers.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR33630BQRNXTQ1 offers a 1.4 MHz switching frequency for smaller passive components. LMR33630CQRNXTQ1 provides alternative frequency options. LMR33630ADDA serves as a non-automotive alternative in a different package.