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参数资料
| 型号： | LB11947 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 1.75 A, PDIP28 |
| 封装： | 0.500 INCH, DIP-28 |
| 文件页数： | 3/14页 |
| 文件大小： | 154K |
| 代理商： | LB11947 |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| LB11948T | 制造商:SANYO 制造商全称: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 制造商全称:Sanyo Semicon Device 功能描述:PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver |
| LB11948T_10 | 制造商:SANYO 制造商全称: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:马达/运动/点火控制器和驱动器 RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| LB11948T-TLM-E | 功能描述:马达/运动/点火控制器和驱动器 PRINTER RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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