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LB11868V Datenblatt(PDF) 5 Page - ON Semiconductor |
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LB11868V Datenblatt(HTML) 5 Page - ON Semiconductor |
5 / 11 page LB11868V No.A1915-5/11 Application Circuit Example *1. Power stabilization capacitor For the power stabilization capacitor on the signal side, use the capacitance of 1μF or more. Connect VCC and SGND with a thick and shortest pattern. *2. Power stabilization capacitor on the power side For the power stabilization capacitor on the power side, use the capacitance of 1μF or more. Connect the power supply on the power side and GND with a thick and shortest pattern. When the IC is used for a fan with a high current level, insert a zener diode between the power supply on the power side and GND. *3. REG pin 3.8V constant-voltage output pin. For the REG oscillation prevention and stabilization, use a capacitor with capacitance of 1µF or more. Connect the REG pin and SGND with a thick and shortest pattern. *4. HB pin Used for Hall device bias purposes. *5. IN+, IN- pins Hall signal input pin. Wiring should be short to prevent carrying of noise. If noise is carried, insert the capacitor between IN+ and IN- pins. The Hall input circuit functions as a comparator with hysteresis (15mV). This also has a soft switch section with ±30mV (input signal differential voltage). It is also recommended that the Hall input level is minimum 100mV (p-p). 4 3 2 1 *2 *1 VCC REG FG IN- IN+ H S-S RMI *5 *15 *7 VTH PWM-IN CPWM CT 220pF *6 *12 SGND *10 SENSE *11 *14 OTS *4 HB *13 *3 *8 KBSET OUT1P OUT1N OUT2P OUT2N RD *9 2 1 4 3 *16 *17 |
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