LMR33620CQ5RNXTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR33620CQ5RNXTQ1 is a SIMPLE SWITCHER synchronous buck converter from Texas Instruments, designed for automotive applications. It operates with an input voltage range of 3.8V to 36V and delivers a fixed 5V output at up to 2A. The device features a 400kHz switching frequency and utilizes a 12-VQFN-HR package. It supports adjustable output voltages from 1V to 24V in other variants and includes ultra-low EMI capabilities. The component is qualified under AEC-Q100 standards and functions within a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Ultra-low electromagnetic interference design
• Automotive grade qualification (AEC-Q100)
• Fixed 5V output configuration

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix CQ5RNXTQ1 against the manufacturer datasheet to confirm the fixed 5V output and Q1 automotive qualification. Ensure the ordering part number matches the required package type and thermal performance specifications. Cross-reference the revision level to guarantee compatibility with existing PCB layouts and design files.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this variant when a stable 5V rail is required for automotive loads. The fixed output simplifies external component selection compared to adjustable versions. Consider the 400kHz frequency for balancing size and efficiency. Verify that the 2A current rating meets peak load requirements without exceeding thermal limits in the target enclosure.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LMR33620 family of SIMPLE SWITCHER converters. It shares core topology with adjustable variants but provides a fixed 5V output. The Q1 suffix denotes automotive reliability compliance. It competes in the high-voltage step-down regulator segment for vehicle electronics requiring compact footprints and robust noise immunity.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LMR33620 variants with different output voltages if system flexibility allows. Check TPSM33620 series for pin-compatible alternatives with similar electrical characteristics. Verify package dimensions and thermal pad configurations before swapping to ensure mechanical fit.