ST1115C Datasheet PDF - Silicon Touch Technology Inc.

General Specifications
   The ST1115 serial IC is a driver with pulse-width modulated (PWM) speed control for two-phase unipolar DC brushless fan applications. The device is used as an interface between a HALL effect latch and a double coil load. Besides its high-efficiency driving capability, the ST1115 has various functions such as rotation detection (for ST1115C only), tachometer signal output (for ST1115D only), linear fan speed control, exterior PWM control, locked-rotor protection and self-restart.

FEATUREs and Benefits
• High-efficiency PWM fan speed control
• Linear temperature-speed control with minimum external circuitry
• High output sinking current capability
• Lock protection and automatic self-restart
• Tachometer output
• Directly connectable to a HALL Latch IC
• Thin, highly reliable package ( SOP8, MSOP8 )