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參數(shù)資料
| 型號： | TDA5345HT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 運動控制電子 |
| 英文描述： | 5 V spindle & VCM driver combo |
| 中文描述： | DISK DRIVE MOTOR CONTROLLER, 2 A, PQFP64 |
| 封裝： | LOW PROFILE, PLASTIC, TQFP-64 |
| 文件頁數(shù)： | 29/44頁 |
| 文件大?。?/td> | 213K |
| 代理商： | TDA5345HT |
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1999 June 10
29
Philips Semiconductors
Preliminary specification
5 V spindle & VCM driver combo
TDA5345HT
The PorN output can also be driven by the retract sequence manager:
If there is a power supply failure at the sequence start-up or during the sequence, PorN will be kept low during all the
programmed sequence, what ever the supply is restored or not.
Caution !!
It is not allowed to wake the VCM up ( VcmSleep = ‘0’’) if the spindle is not on speed, because a retract sequence would
start on a power supply failure without any clock (generated from the spindle back-EMF). PorN would be maintained low
by the retract manager, waiting for clock pulses.
Fig.23 Glitch detector timing
t
Supply
V
Tc
t
t
PorN
Por5Adj signal
with a capacitor
Vref=1.23V
5V
0V
VCM-
FCK136
Tc
PorN
Vdd5
4.1V
Fig.23
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