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參數(shù)資料
| 型號(hào)： | LB8500M |
| 廠(chǎng)商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Monolithic Digital IC DC Fan Motor Speed Control IC |
| 中文描述： | 單片數(shù)字集成電路直流風(fēng)扇電機(jī)轉(zhuǎn)速控制IC |
| 文件頁(yè)數(shù)： | 6/15頁(yè) |
| 文件大?。?/td> | 125K |
| 代理商： | LB8500M |
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LB8500M
No.8336-6/15
Supplementary Operational Descriptions
The LB8500M accepts a duty pulse input and an FG signal from the driver IC, and generates the driver IC control
voltage so that the FG period (motor speed) becomes proportional to the control voltage.
As shown in the figure below, the LB8500M generates a pulse signal from edges on the FG signal and then generates a
pulse width waveform determined by the RC time constant in a one-shot multivibrator.
The LB8500M then integrates that pulse waveform to create the output driver IC control voltage (a DC voltage).
It is also possible to change the slope of the VCTL/speed relationship as shown in the speed control diagram in the
previous section by changing the pulse width with the RC time constant.
Note, however, that since pulses determined by this RC time constant are used, variation in the RC components will
appear as speed control errors.
LB8500M
Driver IC
FGIN
FG
VTH
CTL
CTL
signal
Closed
feedback
loop
FG
EDGE pulse
RC pin
One-shot
multivibrator
TRC(s) = 0.85RC
Slope due to the
RC time constant
EO
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB8500MC-AH | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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 |
| LB8502M | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Monolithic Digital IC DC Fan Motor Speed Control IC |
| LB8502MC-AH | 制造商:ON Semiconductor 功能描述:OTHERS - Tape and Reel 制造商:ON Semiconductor 功能描述:Motor / Motion / Ignition Controllers & Drivers OTHERS |
| LB8503V | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Monolithic Digital IC DC Fan Motor Speed Control IC |
| LB8503V-MPB-E | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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 |
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