General Description
   The APX9277 is a single-phase full wave motor driver for DC fan motors, and speed controlled by PWM input signal. The output signals of this IC are the amplifications of hall input signals. It is suitable for cooler DC fan that needs silent drivers. The device has a built-in lock protection function. When the fan is locked, the device will enter the lockup protection mode. It also has the thermal shutdown protection function. In normal operation, supply current is less than 5mA, but in standby mode (PWM=Low), it is just around 3mA. Moreover, this feature will shut down the amplifiers and FG. The APX9277 is available in MSOP-8 package.

FEATUREs
• Single-Phase Full Wave Fan Driver
• Silent Driver
• Low Supply Current
• Speed Controllable by PWM Input Signal
• Built-in Quick Start Function
• Lock Protection and Auto Restart Function
• Enhance Low Duty Start UP Power
• FG (Rotation Speed Detection) Output
• Built-in Current Limit Circuit
• Built-in Thermal Protection Circuit
• Lead Free and Green Devices Available
   (RoHS Compliant)

APPLICATIONs
• Motor Drivers for Silent Fans