BU6906GF-TL

Overview

The BU6906GF-TL is a 5V single-phase fan motor driver manufactured by Rohm Semiconductor. It integrates a Hall element for sensorless control and features Auto Gain Control (AGC) to maintain stable operation across varying loads. The device supports PWM speed control and includes a standby mode to reduce power consumption. Designed for notebook PC cooling applications, it operates within a supply voltage range of 1.8V to 5.5V and delivers a maximum output current of 0.8A. The component is housed in a compact TSSOF6 package with dimensions of 2.9x3.8mm and a thickness of 0.8mm, suitable for space-constrained electronic designs.

Feature Summary

• Integrates built-in Hall elements for simplified motor control
• Features Auto Gain Control (AGC) for consistent performance
• Supports soft switching drive technology for quiet operation
• Includes lock protection and automatic restart circuits

Applications

• Notebook PC cooling fans
• Single-phase DC brushless fan motors
• Low-power ventilation systems

Procurement Notes

Verify the exact ordering suffix against official Rohm documentation to ensure correct packaging and tape specifications. Confirm that the TSSOF6 package variant matches the required footprint for PCB layout. Check current supply status as automotive or industrial variants may differ. Ensure RoHS compliance aligns with regional regulatory requirements for the intended market.

Selection Notes

Select this component for applications requiring low-voltage operation and integrated Hall sensing. Compare AGC capabilities against competitors if load variability is high. Evaluate the TSSOF6 package size constraints against available board space. Consider the standby current consumption if battery life is a critical design parameter for portable devices.

Part Context

This part belongs to Rohm's series of 5V single-phase full-wave fan motor drivers designed specifically for notebook computer cooling solutions. It distinguishes itself through the integration of Hall sensors and AGC functionality, eliminating the need for external components typically required for similar motor control tasks. The series focuses on miniaturization and energy efficiency for portable electronics.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided source material for this specific model.