BD9P108MUF-CE2

Overview

The BD9P108MUF-CE2 is a synchronous buck DC/DC converter from ROHM Semiconductor, designed for automotive applications. It features an input voltage range of 3.5 V to 40 V and delivers a maximum output current of 1 A. The adjustable output voltage spans from 800 mV to 8.5 V. Operating at a switching frequency of up to 2.2 MHz, it utilizes Nano Pulse Control™ technology. The device is qualified under AEC-Q100 Grade 1 standards, supporting operation between -40°C and +125°C. It includes integrated power MOSFETs in a VQFN24FV4040 package.

Feature Summary

• Integrates Nano Pulse Control™ technology for enhanced efficiency and minimum ON pulse capability.
• Features SLLM™ (Simple Light Load Mode) control to optimize light-load efficiency and reduce standby power consumption.
• Includes comprehensive protection mechanisms such as input UVLO, short circuit, overvoltage, and overcurrent protection.
• Provides a Power Good (PGOOD) output signal and adjustable soft-start functionality for stable system initialization.

Applications

• Automotive infotainment systems requiring robust power management.
• Electronic control units (ECUs) with wide input voltage ranges.
• ADAS sensor modules needing efficient step-down conversion.
• Body electronics and lighting control applications.

Procurement Notes

Verify the specific suffix CE2 against the official ROHM datasheet to confirm package type and tape/reel specifications. Ensure compatibility with AEC-Q100 Grade 1 requirements for your target automotive application. Cross-reference the part number alias BD9P108MUF-C if sourcing from alternative distributors. Confirm that the VQFN24FV4040 footprint matches your PCB design guidelines before finalizing procurement orders.

Selection Notes

Select this component when a wide input voltage range up to 40 V is required alongside a 1 A output capacity. It is suitable for designs prioritizing high efficiency at light loads through SLLM™ control. Consider this part for space-constrained applications due to its compact VQFN package and high switching frequency allowing smaller external inductors. Ensure the thermal performance of the VQFN24FV4040 package meets the thermal dissipation needs of the specific enclosure.

Part Context

This part belongs to ROHM's BD9P series of synchronous buck converters, specifically tailored for automotive use. It shares architectural similarities with other members like the BD9P105MUF and BD9P135MUF but differs in output current and fixed vs. adjustable voltage configurations. The series is characterized by Nano Pulse Control™ integration and AEC-Q100 qualification, forming a family of solutions for diverse automotive power rail requirements.

Replacement Considerations

The BD9P108MUF-C is listed as an alias for this part number. No direct cross-manufacturer substitutes are verified in the provided documentation. When evaluating alternatives, ensure the replacement supports the same 3.5 V–40 V input range, 1 A output, and AEC-Q100 Grade 1 qualification to maintain system integrity.