LMR33620CQRNXTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR33620CQRNXTQ1 is a SIMPLE SWITCHER synchronous buck converter from Texas Instruments, designed for automotive applications. It operates with an input voltage range of 3.8 V to 36 V and delivers a fixed output of 5 V at up to 2 A. The device integrates high-side and low-side MOSFETs in a compact 12-VQFN-HR package measuring 3x2 mm. It supports adjustable switching frequencies or fixed operation at 2.1 MHz. The component meets 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 ultra-low EMI technology minimizes conducted and radiated emissions without requiring external filtering components.
• Automotive-grade reliability certified under AEC-Q100 standards for harsh environment operation.
• Compact 12-VQFN-HR package with wettable flanks facilitates automated surface-mount assembly and inspection.

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment systems and body control modules
• ADAS sensor power distribution networks
• Telematics and gateway units

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix CQRNXTQ1 confirms the specific 5V fixed output variant and Q1 automotive qualification. Ensure the order specifies the correct reel quantity if bulk procurement is required. Confirm RoHS compliance status matches current manufacturing site specifications. Validate that the 12-VQFN-HR package dimensions align with the target PCB footprint requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 5V rail is required for automotive loads drawing up to 2A. The integrated EMI filter simplifies layout compared to standard converters. Consider the 2.1 MHz frequency option to reduce passive component size while maintaining efficiency. Verify thermal performance constraints based on the exposed pad soldering quality and board copper area.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LMR33620-Q1 family of synchronous step-down converters. It shares architectural similarities with the LMR33630-Q1 but offers lower current capacity. The series targets high-density power designs in automotive electronics where space and electromagnetic compatibility are critical design constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR33620CQ5RNXTQ1 serves as a direct functional substitute with identical electrical characteristics and packaging.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LMR33620CQRNXTQ1 support adjustable output voltage?

No, this specific part number provides a fixed 5V output. Adjustable versions require different suffixes such as ARNXT.

What is the maximum operating junction temperature?

The device is rated for a maximum junction temperature of 125°C.