DESCRIPTION

· The BU6904GF is a 5V single-phase full-wave fan motor driver with a built-in HALL element.

· It is designed for DC brushless fan motors, featuring a compact package and efficient motor control functions.

· Includes auto gain control (AGC), soft switching for silent operation, and soft start to reduce startup current.

· Ideal for applications such as notebook PC cooling fans.

FEATURES

· Integrated HALL element for precise motor control.

· Auto Gain Control (AGC) for optimized performance.

· Soft switching drive (PWM type) for reduced noise.

· Soft start function to minimize initial current surge.

· Lock protection and automatic restart circuit for enhanced reliability.

· Compact SSOF6 package with a thickness of 0.3mm when drop-mounted.

· Rotating speed pulse signal (FG) output for monitoring.

· Vcc speed control ranging from 1.8V to 5.5V.

APPLICATIONS

· Suitable for compact 5V fans, particularly in notebook PC cooling systems.