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参数资料
| 型号： | LB11948T |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 0.5 A, PDSO30 |
| 封装： | 0.275 INCH, TSSOP-30 |
| 文件页数： | 3/13页 |
| 文件大小： | 161K |
| 代理商： | LB11948T |
LB11948T
No.7947-11/13
Usage Notes
(1) Simple Formulas for Determining Resister and Capacitor Values
The formula for setting the rising time (T1) and the falling time (T2) for the RC oscillator are shown below. (Refer to
Fig. 1)
Fig. 1
Formulas
Oscillation period
T = T1+T2
(sec)
Threshold voltages V1 = ((VCC - Vset1) × 10.7k/48.7k) + Vset1
(V)
V2 = ((VCC - Vset2) × 42.7k/80.7k) + Vset2
(V)
Vset1 : VCE voltage of transistor for internal comparator hysteresis = 0.05V
Vset2 : VCE voltage of reference resistance switching transistor of oscillation circuit = 0.1V
When charging :
T1 = -C
× R × ln {(VCC - V2)/(VCC - V1)} (sec)
When discharging : T2 = -C
× Rin × ln (V1/V2) (sec)
Rin : Internal discharge resistance of the CR pin1.3k
Ω
C : External capacitor
R : External resistor
Oscillation frequency
Fc = 1/T (Hz)
The T2 fall time serves as the noise canceling time (Tn). This time is a forced-on time for the output, and the output is
not turned off even when the E pin voltage is higher than the sense voltage that has been preset by VREF.
T2
T1
V1
V2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| LB-1195 | 制造商:Ideal Industries Inc 功能描述:WIRESTOP STMLT STD 制造商:Ideal Industries Inc 功能描述:Stripmaster Lite Repair |
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