Description

Suitable for a 3-phase BLDC (Brush-Less Direct Current) spindle motor driver with PWM, the monolithic FAN8741/FAN8742 IC also includes 2-ch motor drivers with PWM for sled motors and 4-ch linear drivers which drive the focus actuator, tracking actuator, tilt actuator, and loading motor in optical media applications. Designed specifically for high-speed/high-density optical media applications, the FAN8741/FAN8742’s power stage is created by D-MOS transistors which have extremely low RDSON. This enables less heat generation and guarantees improved reliability.

Features

Common

• Built-in thermal shutdown circuit (TSD)

• 8 Independent voltage sources

• Corresponds to 3.3V or 5V DSP

• 4 selectable mute inputs

Spindle

• Output PWM mode control

• FG output: open collector type

• Selectable brake(short & reverse brake)

• Built-in hall bias

• 180° commutation(compatible with conventional BLDC spindle motor)

• Built in short-through protection function

BTL(Sled 2-channels)

• Output PWM mode control

• Built in short-through protection function

BTL(Other 4-channels)

• Output linear mode control

Typical Applications

• CD-ROM

• CD-RW

• DVD-ROM

• DVD-RAM

• DVD Player (DVDP)

• Other compact disk media

• Game consoles