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参数资料
| 型号： | LB1841V |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 0.8 A, PDSO20 |
| 封装： | SSOP-20 |
| 文件页数： | 4/7页 |
| 文件大小： | 208K |
| 代理商： | LB1841V |
LB1841V
No. 4384-4/7
Sample Application Timing Chart
Sample Application timing chart
1 Connect DC motor (RL = RΩ) between OUT1 and OUT2, and input forward signal (IN1 = High, IN2 = Low)
with RD pin in pull-up state.
Because output is saturated during startup, set DEL input to Low.
2 DC motor starts and startup current (IST = VM/R) flows through motor.
3 DC motor rotates in normal condition. At this point, set DEL input to High.
4 When DC motor locks up, motor current IM increases. When it reaches Ilimit (=VLIR/(10 Rf)), output current
limiting circuit operates. At the same time, the set current detection circuit sets RD output to Low.
Reference voltage Vref
The Vref output is linked to the input. When IN1 or IN2 is High, the reference voltage is output.
Output current limiter circuitry
The circuit configuration is as shown in the separate diagram.
The output set current is determined by the reference voltage VLIR applied to the LIR pin. When VLIR is
applied, 1/10 of the voltage occurs across RS in the diagram. This voltage is input to the + side of the voltage
setting amplifier.
The motor current IM generates a voltage (IM × Rf) across the external resistor Rf. This voltage is input to
the – side of the amplifier. The differential amplifier operates so as to make the two inputs equal, then the
output transistor is driven.
The set current is determined by the following equation:
Ilimit = VLIR/(10Rf) [A]
V(V)
IN1
IN2
DEL
G
IO
OUT1
OUT2
RD
t (s)
VM
R
VLIR
10Rf
1
2
3
4
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相关代理商/技术参数 |
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| LB1843V | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Low-saturation, current-controlled bidirectional motor driver |
| LB1843V_12 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Low-saturation, current-controlled bidirectional motor driver |
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| LB1843V-MPB-E | 功能描述:马达/运动/点火控制器和驱动器 AMUSEMENT 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 |
| LB1843V-S-TRM-E | 制造商:ON Semiconductor 功能描述:H-BRIDGE MOTOR DRIVER - Tape and Reel |
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