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參數資料
| 型號： | FAN8423DTF |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.3 A, PDSO28 |
| 封裝： | 0.375 INCH, HEAT SINK, SSOP-28 |
| 文件頁數： | 18/18頁 |
| 文件大小： | 283K |
| 代理商： | FAN8423DTF |
FAN8423D (KA3023D); PRELIMINARY
9
2. SHORT BRAKE
When the pick-up mechanism moves from the inner to the outer spindle of the CD, the Brake function of the reverse voltage is
commonly employed to decrease the rotating velocity of the Spindle Motor.
However, if the Spindle Motor rotates rapidly, the Brake function of the reverse voltage may produce more heat at the Drive
IC.
To remove this shortcoming and to enhance the braking efficiency, the Short Brake function is added to FAN8423D. When the
Short Brake function is active, all upper Power TRs turn off and all lower Power TRs turn on. This slows down the motor.
3. START/STOP (POWER SAVE)
When Start/Stop function is active, all Power TRs turn off.
Pin # 18
Short Brake
HIGH
ON
LOW
OFF
Pin # 23
Start/Stop
HIGH
OPERATE
LOW
STOP
2
4
7
18
Vcc
ON
OFF
20K
1K
MOTOR
OFF
ON
2
4
7
23
Vcc
Start
Stop
30K
40K
MOTOR
OFF
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