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參數(shù)資料
| 型號： | LB11868V |
| 元件分類： | 運動控制電子 |
| 英文描述： | DISK DRIVE MOTOR CONTROLLER, PDSO20 |
| 封裝： | 0.225 INCH, SSOP-20 |
| 文件頁數(shù)： | 2/11頁 |
| 文件大?。?/td> | 259K |
| 代理商： | LB11868V |
LB11868V
PS No.A1915-10/11
Control timing chart
(ON-time start, Lock protection)
(1) When a stop signal based on the VTH voltage has been input during normal rotation
When the output duty ratio based on the VTH/RMI input drops to below 1% or so, the OTS voltage rises, and when it
reaches VOTS, the standby mode is established, the CT pin discharges, and the S-S pin is charged. In the standby mode,
if the drive mode has been established again by the VTH/RMI input, the rotation is started immediately with soft start.
The CT pin discharges at the same time as the switching of FG. For details on lock protection, refer to (2).
(2) When a stop signal based on the VTH voltage has been input while the fan is constrained
When the fan is constrained, the CT pin voltage rises, and when it reaches VCTH, the lock protection mode is
established, and OUTP is set to OFF and RD is set to OFF.
When the lock protection mode is established, the CT pin discharges, and when VCTL is reached, restart (soft start) is
initiated. When rotation is started and the FG signal is switched, RD is set to low.
Note: RD is also set to low when the standby mode is established when locked.
GND
VCPWMH
VCPWML
CPWM
GND
OTS
CT
FG
RD
RMI voltage
VTH voltage
S-S voltage
VOTS
VCTH
GND
VCPWMH
VCPWML
CPWM
GND
OTS
CT
FG
RD
VOTS
VCTL
VCTH
RMI voltage
S-S voltage
VTH voltage
Fan restraint
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