AN8294S

www.DataSheet4U.com AN8294S Optical Disc Brush-less Spindle Motor Drive IC s Overview The AN8294S is an IC for driving the Optical Disc spindle motor. It employs three-phase full-wave soft switch driving system, and its current drive do not require the electrolytic capacitor between motor windings (snubber-less). It is suitable for 4 to 12 times speed CD-ROM spindle motor drive. 1 2 3 4 5 6 7 8 9 10 11 12 0.1 – 0.05 (0.05 ~ 0.1) Unit : mm 0.4 s Features Three-phase full-wave soft switch system used and snubberless 24 23 22 21 20 19 18 17 16 15 14 13 FG output and rotation direction detection output terminal provided Current limitation function built-in, and voltage fall of detection resistance does not affect the saturation voltage Reverse rotation brake realized by voltage setting with EC/ECR Hall bias built-in Reverse rotation function built-in 0.5 (4.6) (6.0) 8.4±0.3 11.73±0.3 24-pin SOP Package (HSOP024-P-0450A) s Pin Name Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Symbol VH FG ECR EC SS RDS NC PCI VCC SG NC VM Pin name Hall bias terminal FG signal output terminal Torque command reference input terminal Torque command input terminal Start/Stop control terminal Reverse rotation detection signal output terminal Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Symbol CS2 CS1 A3 A2 A1 PG H1+ H1– H2+ H2 – Pin name Current detection terminal 2 Current detection terminal 1 Drive output 3 Drive output 2 Drive output 1 Power GND terminal Hall element 1 positive input te...