LMQ64480QRXARQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMQ64480QRXARQ1 is an automotive-grade, synchronous buck DC/DC converter from Texas Instruments. It supports a 3V to 36V input range and delivers up to 8A total output current via two independent channels (4A each). The device features low quiescent current and operates at a switching frequency of 2.1 MHz. It is housed in a 24-pin PowerTFQFN package and is designed for high-current single or dual output applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual-output architecture providing independent 4A channels for flexible power distribution
• Automotive qualification ensuring reliability in harsh vehicle environments
• Low quiescent current design to minimize standby power consumption

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring dual voltage rails
• Instrument clusters with high-current display drivers
• ADAS sensor modules needing stable dual-supply voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as QRXARQ1 to ensure correct packaging and temperature grade. Confirm that the specific variant matches your board layout requirements for the PowerTFQFN package. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated outputs are required within a single footprint. Ensure the input voltage range aligns with the vehicle's battery system. Consider thermal management solutions due to the 8A total current capability in a compact package. Verify EMI filtering requirements given the 2.1 MHz switching frequency.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMQ64xx-Q1 family of automotive synchronous buck converters. The family shares common features like low IQ and wide input voltage ranges but varies in output configuration and current ratings. This specific model offers dual-channel capability, distinguishing it from single-output variants in the same series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the LMQ64xx-Q1 family. Verify if single-output models can be used if only one channel is needed. Ensure any substitute maintains the same automotive qualification and thermal performance characteristics.