BU6909AGFT
5V Single-phase Full-wave Fan Motor Driver

The BU6909AGFT is a 5V single-phase full-wave FAN motor driver with built in HALL element. It is part of the DC brushless FAN motor driver series. BU6909AGFT is built in a compact package and provides Auto Gain Control function (AGC), silent drive by soft switching, and low battery consumption via its standby function. BU6909AGFT is best used for notebook PC cooling FANs.

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Product Detail

 
Part Number | BU6909AGFT-TL
Status | Recommended
Package | TSSOF6
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Standard

Type

Driver

Vcc (Max.)[V]

7.0

Power Supply Voltage (Max.)[V]

5.5

Power Supply Voltage (Min.)[V]

1.8

Iout (Max.)[A]

0.8

Drive Type

PWM Soft SW

Speed Control

PWM

Standby mode

Yes

FG/AL Signal

FG

Usage

Notebook PC

Number of phase

Single-phase

Power supply

5V

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

Features:

  • „Built in HALL element
  • „Auto Gain Control function (AGC)
  • „Soft switching drive (PWM type)
  • „Low PWM duty start up
  • „Quick start function
  • „Stand-by mode
  • „Incorporates lock protection and automatic restart circuit
  • „Compact package (GFT:TSSOF6 flat lead package) When TSSOF6 is mounted, package thickness is 0.3mm
  • „Rotating speed pulse signal (FG) output
  • „PWM speed control

Design Resources

 

Technical Articles

Schematic Design & Verification

  • Method for Monitoring Switching Waveform
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Notes for Temperature Measurement Using Thermocouples
  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple

Tools

Simulations (Login Required)

  • Method for Exporting Circuit Data (ROHM Solution Simulator)

2D/3D/CAD

  • TSSOF6 Footprint / Symbol

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)