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Product Detailed Parameters
- Description：THREE-PHASE FULL-WAVE FAN MOTOR
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushless DC (BLDC)
- Function：Driver
- Output Configuration：Pre-Driver - Half Bridge (3)
- Interface：Logic
- Technology：Power MOSFET
- Step Resolution：-
- Applications：PC's, PDA's
- Current - Output：1A
- Voltage - Supply：2.2V ~ 5.5V
- Voltage - Load：-
- Operating Temperature：-25°C ~ 95°C
- Mounting Type：Surface Mount
- Package / Case：10-UFDFN Exposed Pad
- Supplier Device Package：VSON010X3030
- Grade：-
- Qualification：-
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Overview
The BD6326ANUX-E2 is a three-phase brushless DC motor driver designed for sensorless fan applications in notebook PCs. It operates on a power supply voltage range of 2.2V to 5.5V with a maximum output current of 700mA. The device supports PWM speed control and features a 180-degree sinusoidal drive mode. It utilizes a VSON-10 package (3.0x3.0mm) and functions within an operating temperature range of -25°C to +95C.
Feature Summary
- Employs direct PWM soft-switching mechanism for silent operation and low vibration
- Supports 180-degree full-wave sinusoidal drive for smooth motor performance
- Integrates power save function and internal resistance for efficiency
- Enables motor rotation direction selection via dedicated input
Applications
- Cooling fans for notebook personal computers
- Sensorless BLDC fan motor control systems
- Low-voltage portable electronic cooling devices
Procurement Notes
Verify the specific suffix E2 against the manufacturer's latest datasheet to confirm compliance with current environmental standards and pinout configurations. Ensure the ordering quantity aligns with the standard reel packaging size of 4000 units if bulk procurement is intended, or verify cut-tape availability for smaller quantities. Cross-reference the RoHS status details provided by the supplier to meet regulatory requirements.
Selection Notes
Select this component for applications requiring silent, low-vibration fan control in space-constrained portable devices. The sensorless design eliminates the need for Hall sensors, reducing system complexity. The 180-degree sinusoidal drive offers smoother torque compared to standard trapezoidal methods. Ensure the application voltage stays within the 2.2V to 5.5V range and that thermal management suits the VSON-10 package constraints.
Part Context
This part belongs to ROHM's series of three-phase fan motor drivers aimed at PC cooling solutions. It is distinct from higher-current industrial variants and focuses on efficiency and acoustic performance for consumer electronics. The BD6326ANUX-E2 represents the standard grade product line, optimized for cost-effective integration into mainstream notebook and PDA cooling architectures.
Replacement Considerations
The BD6326NUX-E2 is listed as a related variant; however, it is marked as not suitable for new designs. Verify compatibility with existing PCB layouts when considering substitutes, as package dimensions and pinouts may differ slightly between revisions.
