AN8261

AN8261 Brushless Motor Driver s Overview The AN8261 is a 3-phase full-wave brushless motor drive IC and optimum for driving the air conditioner fan motors, etc. 1 2 3 21.7±0.3 4 5 6 7 8 9 6.3±0.25 18 17 15 14 13 12 11 10 0.51min. 2.54 3.8±0.25 (3.45) 0.3 + 0.1 5 – 0.2 Unit : mm 0.5±0.1 1.2±0.25 s Features Operating supply voltage range : VCC= 4.5 to 7V 3-phase full-wave drive, external power transistor Built-in low-voltage protective circuit Built-in thermal protective comparator circuit Built-in Hall amplifiers with hysteresis 16 s Applications Driving the brushless motors such as air conditioner fan motors, etc. 3 ~15˚ 7.62±0.25 18-pin DIL Plastic Package (DIP018-P-0300D) s Block Diagram VCC 1 2 3 18 17 Hysteresis Amp.A 16 Signal Processing 15 Hysteresis Amp.B 14 13 Hysteresis Amp.C VREF GND 4 TSD Hysteresis Control VCC Monitor Protector 7 12 8 11 9 10 6 5 s Absolute Maximum Ratings (Ta=25˚C) Parameter Supply voltage Supply current Output drive current Power dissipation Operating ambient temperature Storage temperature Symbol VCC ICC I7, I8, I9 I10, I11, I12 PD Topr Tstg Rating 7.5 80 –7 to + 25 800 –20 to + 80 –55 to +150 Unit V mA mA mW ˚C ˚C s Recommended Operating Range (Ta=25˚C) Parameter Operating supply voltage range Symbol VCC Range 4.5V to 7V s Electrical Characteristics (Ta=25˚C) Parameter Supply current 1 Supply current 2 Sensor amp. input voltage L to H Sensor amp. input voltage H to L FG output voltage low level Power drive output voltag...