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