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ST1115D Datasheet(PDF) 2 Page - Silicon Touch Technology Inc. |
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ST1115D Datasheet(HTML) 2 Page - Silicon Touch Technology Inc. |
2 / 13 page 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1115C/ST1115D SP-ST1115CD-A.005 Version :A.005 Page :1 ST1115C/ST1115D PWM Speed Control Double Coil Brushless DC Motor Driver 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. The speed command can be either a PWM signal or simply a voltage reference according to the applications. For the temperature-proportional fan speed control, the voltage command can be generated by an external temperature sensor, typically a thermistor-resistor divider. If the motor rotation is stalled by external force or obstacles, overdrive current (or lock current) may incur coil overheat/burning. To prevent coil overheat/burning, this device incorporates locked-rotor protection circuitry to shut down the drivers. After the motor locking is released, the drivers can be automatically powered up by the internal self-restart circuitry. 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 ) |
Similar Part No. - ST1115D |
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Similar Description - ST1115D |
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