BH67172NUX-GE2

Overview

The BH67172NUX-GE2 is a three-phase brushless DC motor controller and driver manufactured by ROHM Semiconductor. It operates within a supply voltage range of 1.8 V to 5.5 V, delivering an output current of 700 mA with a quiescent current of 4.5 mA. The device supports a maximum operating frequency of 50 kHz and features a low output voltage of 250 mV. Designed for surface-mount installation in a VSON-10 package, it functions reliably across temperatures from -25°C to +95°C, with a power dissipation rating of 464 mW.

Feature Summary

• Integrates full control and power stages for sensorless three-phase BLDC motor drive
• Supports speed control via PWM input signal without requiring external Hall sensors
• Utilizes direct PWM soft switching mechanism to reduce operational noise and vibration

Applications

• Fan motor drivers for notebook PCs
• Cooling systems for portable electronic devices
• Sensorless brushless DC motor applications requiring compact form factors

Procurement Notes

Verify the current lifecycle status before integration, as this component may be marked as Not Recommended for New Designs (NRND). Confirm that the VSON-10 package dimensions and thermal characteristics align with your PCB layout constraints. Ensure the 1.8 V minimum supply voltage meets your system's power rail specifications. Validate compatibility with existing firmware or control logic for PWM speed regulation.

Selection Notes

Select this component when designing compact cooling solutions for notebooks or portable electronics where space is limited. It is suitable for applications requiring silent operation due to its soft-switching technology. Consider the 700 mA output limit and 5.5 V maximum voltage when sizing the motor load. The integrated nature reduces external component count compared to discrete driver solutions.

Part Context

This part belongs to ROHM's series of three-phase fan motor drivers designed for notebook PC cooling. It shares functional similarities with other models like the BD67173NUX-E2 but differs in specific electrical parameters such as minimum supply voltage and output configuration. These drivers are engineered to minimize external components while maintaining efficient sensorless control for small form-factor applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative ROHM models within the same product family for potential pin-compatible or functionally equivalent replacements, ensuring verification of electrical parameter compatibility.