AN8428GAK
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 ,...
