BD90541MUV-CE2

Overview

The BD90541MUV-CE2 is a synchronous step-down DC/DC converter manufactured by ROHM Semiconductor. It operates with an input voltage range of 2.6 V to 5.5 V and delivers a maximum output current of 4 A. The adjustable output voltage spans from 600 mV to 5 V. The device supports switching frequencies between 300 kHz and 2.4 MHz, enabling the use of smaller external components. It features a quiescent current of 1 uA and operates within a temperature range of -40°C to +125°C. The component is housed in a VQFNSV4040-EP-20 package and holds AEC-Q100 qualification for automotive applications.

Feature Summary

• Integrated Pch and Nch output MOSFETs provide up to 4 A output current capability.
• Current mode control architecture ensures excellent load response performance.
• Frequency synchronization allows operation with an external clock signal.
• Built-in self-reset type overcurrent protection safeguards against fault conditions.

Applications

• Automotive infotainment systems
• ADAS sensor power supplies
• Vehicle body control modules

Procurement Notes

Verify the specific suffix CE2 matches the required automotive grade and functional safety support category. Confirm the VQFNSV4040-EP-20 package dimensions align with PCB layout constraints. Ensure the design accounts for the specified thermal characteristics given the integrated FET topology. Cross-reference the datasheet revision to confirm compatibility with existing BOM specifications.

Selection Notes

Select this component when a compact solution is required for low-voltage automotive applications demanding high efficiency. The wide frequency range allows optimization for either size or EMI performance. The integrated MOSFETs simplify the design by reducing external component count. Verify that the input voltage profile remains within the 2.6 V to 5.5 V operational window.

Part Context

This part belongs to the BD90 series of synchronous buck converters designed for automotive environments. It shares architectural similarities with other members like the BD90521MUV but offers higher current capacity. The series emphasizes miniaturization through high-frequency operation and integrated power stages suitable for space-constrained vehicle electronics.

Replacement Considerations

The BD90541MUV-C is listed as an alias for this component. No distinct substitute part numbers are confirmed in the provided documentation.