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FAN8025G3 Datasheet(PDF) 9 Page - Fairchild Semiconductor |
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FAN8025G3 Datasheet(HTML) 9 Page - Fairchild Semiconductor |
9 / 13 page FAN8025G3 9 Application Information 1. Reference Input • Reference input (PIN 22) The applied voltage at the reference input pin must be ranged between 1.0V and 3.3V, when VCC1=12V. When the reference input voltage goes below 0.7V, all channels are disabled. 2. Stand-by Function • MUTE input (PIN 23) We recommend CH1 as the loading(or tray) motor driver. Detailed logic table is as below. 3. Protection Function Thermal shutdown (TSD) When the chip temperature rises above 175 °C, the thermal shutdown (TSD) circuit is activated and the output circuit is in the mute state, that is off state. The TSD circuit has a temperature hysteresis of 25 °C 4. Separation Of Power Supply • VCC2 (PIN 24) VCC2 is the power supply for CH4 and CH5, which are current feedback drivers. • VCC1 (PIN 19) VCC1 is the power supply for CH1, CH2, CH3 and predriver. VCC1 input voltage must be higher than or same to VCC2. (VCC1 ≥VCC2) INPUT LOGIC CH1 CH2 CH3 CH4 CH5 Stand-by input High OO OO O Low or open O X X X X |
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