AN8428GAK Datasheet | Panasonic

Overview AN8428GAK is motor b IC for 3.5inch HDD. By new retract circuit ,reduce external ponents and shorten the brake time of the disk to improve reliability of HDD . Spindle motor sensor less linear drive. VCM linear drive , PWM-DAC control . Built-in Retract , 12 V/5 V/3.3 V power monitor, 3.3 V-Regulator. 80-pin TQFP package with exposed heat think . Unit : mm - Features - By new retract circuit ,reduce external ponents and shorten the brake time 1/2 of the disk to improve reliability of HDD . - Built-in shock sensor amplifier for mechanical shock protection and 3.3 V regulator for logic semiconductor . - 10 d B acoustic noise reduction by trapezoidal current on spindle motor drive . - 80- pin TQFP package with the smallest thermal resistance in the industry . Meet to increase speed of HDD higher 30 % than previous. HQFP080-P-1414 - Principle functions (1)Spindle motor sensor less linear drive :2.7 A peak current drivers , Ron=1.1 Ω (2)VCM linear drive : 1.8 A peak current , Ron=1.5 Ω (3)Retract function exists (4)Built in 12 V/5 V/3.3 V power monitor (5)Built in shock sensor amplifier (6)Built in 3.3 V regulator - Applications 3.5 inch HDD The products and specification are subject to change without any notice. Please ask for the latest Product Standards to guarantee the satisfaction of your product requirements. 1.Kotari Yakemachi, Nagaokakyo, Kyoto, 617-8520 Japan M00389AE Tel. (075)951-8151 http://.mec.panasonic.co.jp New publication, effective from May.8.2000 - Standard application VCC1S12,2S12 VCCV12 VCCA12 VCC5 0.047 µ F BSTCP1 BSTCP2 VCC3.3 10 µ F 0.1 µ F,18V BSTFLT 57 78 10 µ F 2SB1073 Vcc5 100 XN4502 XN 4502 GNDSUBA 54 7,18,44,45 BOOSTER POWER ON RESET + － POR5VADJ 3.3V...