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參數(shù)資料
| 型號： | LB11868V |
| 元件分類： | 運(yùn)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)： | 10/11頁 |
| 文件大小： | 259K |
| 代理商： | LB11868V |
LB11868V
No.A1915-8/11
Control timing chart
(Speed control)
(1) Minimum speed setting (standby) mode
The low-speed fan rotation occurs at the minimum speed set with the RMI pin.
When the minimum speed is not set (RMI pin pulled up to REG), the motor stops.
If the VHT voltage rises when the lowest speed is not set (RMI pin is pulled up to REG), the fan stops running, and if
the OTS pin capacitor is used, the standby mode is established.
Details of the standby mode are given in the section “Control timing chart (ON-time start, Lock protection).
(2) Low speed
high speed
PMW control is made by comparing the CPWM oscillation voltage (VCPWML
VCPEMH) and VTH voltage.
The drive mode is established when the VTH voltage is low.
Both upper and lower output FET are turned ON when the VTH voltage is low.
When the VTH voltage is high, Pch is turned off, and the coil current is regenerated inside the lower FET. Therefore,
as the VTH voltage decreases, the output ON-DUTY increases, causing an increase in the coil current and raising the
motor rotation speed.
The upper output Pch is turned OFF when the VTH voltage is high, regenerating the coil current in the lower TR.
Therefore, as the VTH voltage decreases, the output ON-DUTY increases, causing increase in the coil current, raising
the motor rotation speed.
The rotational speed can be monitored using the FG output.
(3) Full speed mode
The full speed mode becomes effective when the VTH voltage is VCPWML or less. (Set VTH = GND when the
speed control is not to be made.)
GND
VCPWMH
VCPWML
CPWM
0%
100%
FG
ONDUTY
VTH voltage
RMI voltage
Minimum speed
setting rotation
Low speed
High speed
PWM control speed variable
Full speed
Standby mode
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB11868VGEVB | 功能描述:電源管理IC開發(fā)工具 EVM FOR LB11868V RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LB11868V-MPB-H | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LB11868V-TLM-H | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 FAN MOTOR DRIVER RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LB11870 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Three-Phase Brushless Motor Driver for Polygonal Mirror Motors |
| LB11870_07 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Polygonal Mirror Motors Three-Phase Brushless Motor Driver |
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