Descripation
The FAN8048 is a monolithic integrated circuit suitable for a 4 channels direct PWM H-bridge driver which incorporates two switch-mode step up-down converter with synchronous rectification provides local microprocessor and servo IC power in portable CD players and portable devices.

FEATUREs
H-Bridge PWM Driver
• 4 Channels direct PWM H-bridge drivers
• Digital input and direct PWM output
• Internal power switches
    - ON state resistance : 2.0 Ω (typ.), which value added the upper and the lower switches

Synchronous DC-DC Converter
• Built-in step up converter (VG converter)
• Built-in two synchronous step up-down converter
• Built-in short circuit protection
• Internal Switches
    - Power Switch : 0.4Ω (typ.) at 500mA
    -. Synchronous-Rectifier Switch : 0.4Ω (typ.) at 500mA

Others
• Built-in power-on reset circuit
• Built-in battery charge circuit
• Built-in voltage regulator control circuit
• Built-in thermal shutdown (TSD) circuit
• Buit-in channel mute circuit

Typical application
• Portable CD-MP3 player