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參數(shù)資料
| 型號(hào)： | LB11947 |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 1.75 A, PDIP28 |
| 封裝： | 0.500 INCH, DIP-28 |
| 文件頁(yè)數(shù)： | 3/14頁(yè) |
| 文件大?。?/td> | 154K |
| 代理商： | LB11947 |
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LB11947
No.7318-11/14
Switching OFF time and noise canceling time set method
Connection of C and R between CRA pin (pin 14), CRB pin (pin 12) and GND allows setting of the switching OFF time
and noise canceling time.
The noise canceling time Tnc and switching OFF time Toff is set approximately by the following equation.
[Noise canceling time Tnc]
Tnc
≈ C × R × ln {(1–RI)/(4–RI)} [s]
[Switching OFF time Toff]
Toff
≈ – C × R × ln (1/4.8) [s]
I
: CR pin charge current
[A]
C
: CR pin external capacitor
[F]
R
: CR pin external resistor
[
Ω]
Peak coil current set method
The peak current value (set current) flowing through the motor coil is set by the sense resistor to sense the current
connected between EA pin (pin 25), EB pin (pin 2) and GND and by the reference voltage applied to VREFA pin (pin 15)
and VREFB pin (pin 13).
Ipeak = Vref/ (5
× Rs)
Ipeak : Set current
[A]
Vref : VREF pin application voltage [V]
Rs
: Current sense resistor
[
Ω]
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB11948T | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Monolithic Digital IC PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver |
| LB11948T_07 | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver |
| LB11948T_10 | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver |
| LB11948T-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 |
| LB11948T-TLM-E | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 PRINTER 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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