FAN8400BD3

www.fairchildsemi.com FAN8400D (FAN8400BD3) 3-Phase BLDC Motor Driver with PLL Features 3-Phase BLDC motor driver IC with speed control Phase Locked Loop (PLL) speed control Built-in phase locked detector output Current linear drive scheme External clock for arbitrary motor speed Built-in FG amplifier and integrating amplifier Auto Gain Control (AGC) circuit for compensation hall amplifier Built-in protection circuits (over-current limit, under voltage limit, thermal shut down) Description The FAN8400D is a monolithic integrated circuit. it is one driver for laser beam printer (LBP) polygon mirror motor, which has single chip implementation of all circuits. For extremely high rotational precision, it employs the phase locked loop (PLL) speed control scheme. 28-SSOPH-375SG2 Typical application Polygon mirror motor drive IC for laser beam printer Polygon mirror motor drive IC for facsimile Polygon mirror motor drive IC for duplicator Polygon mirror motor drive IC for multi function printer General 3 phase BLDC motor drive IC Ordering Information Device FAN8400BD3 Package 28-SSOPH-375SG2 Operating Temp −20°C ~ +80°C −20°C ~ +80°C FAN8400BD3TF 28-SSOPH-375SG2 Rev.1.0.1 ©2001 Fairchild Semiconductor Corporation FAN8400D (FAN8400BD3) Pin Assignments AGC FGINFGS FGOUT S/S NC NC 1 2 3 4 5 6 7 28 27 26 25 24 23 22 HWHW+ HUHU+ HVHV+ W FIN FAN8400D FIN SGND LD ECLK PD EI EO FC 8 9 10 11 12 13 14 21 20 19 18 17 16 15 V U RF PGND VCC VREG N...