DA9131-44RT2

Power Management - Specialized Overview

The DA9131-44RT2 is a dual-channel step-down DC/DC converter from the Renesas DA9131 series, designed for high-efficiency power delivery in compact systems. It features integrated switching FETs capable of delivering 5A per channel with an input voltage range of 2.8V to 5.5V and output voltages adjustable from 0.3V to 1.9V. The device operates at a nominal switching frequency of 4MHz, enabling the use of small 0.10µH inductors. It includes I2C-compatible interface (FM+), programmable GPIOs, and comprehensive protection features such as output undervoltage/overvoltage protection and two-step overtemperature protection. The component is housed in a 24-pin FC-QFN package.

Power Management - Specialized Feature Summary

• High-efficiency dual-channel buck conversion with integrated switches exceeding 90% efficiency
• I2C-compatible control interface with programmable GPIOs and soft-start capabilities
• Comprehensive safety monitoring including voltage, current, and temperature supervision
• Compact design optimized for minimal bill of materials using small inductors

Power Management - Specialized Applications

• Switches and routers
• Automotive infotainment systems
• Advanced Driver Assistance Systems (ADAS)
• Telematics units

Power Management - Specialized Procurement Notes

Verify availability status carefully as supply may be restricted or limited. Confirm exact ordering suffix requirements for specific output configurations. Ensure compatibility with I2C address settings if multiple devices are used. Check moisture sensitivity handling requirements during storage and assembly. Validate that the selected variant meets the required ambient temperature range for the target application environment.

Power Management - Specialized Selection Notes

Select this component when high current density and thermal efficiency are critical for dual-rail power architectures. Consider the 4MHz switching frequency for minimizing passive component size compared to lower-frequency alternatives. Evaluate the need for remote sensing if precise load regulation is required over long PCB traces. Ensure the input voltage range aligns with the system's battery or rail specifications.

Power Management - Specialized Part Context

The DA9131-44RT2 belongs to the Renesas DA9131 family of flexible and scalable sub-PMICs. This series enables tailored power solutions for automotive and industrial applications. The device integrates fully into Renesas' ecosystem for high-performance processing systems requiring efficient, high-current power delivery within a small footprint.

Power Management - Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical parameter compatibility before considering any alternative components from other manufacturers.