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參數(shù)資料
| 型號： | LB1841 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Low-Saturation Current-Controlled Forward/Reverse Motor Driver |
| 中文描述： | 低飽和電流控制前進(jìn)/后退電動機(jī)驅(qū)動器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 55K |
| 代理商： | LB1841 |
LB1841V
No. 4384-4/7
Sample Application Timing Chart
Sample Application timing chart
1 Connect DC motor (R
L
= R
) 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 (I
ST
= V
M
/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 I
M
increases. When it reaches I
limit
(=V
LIR
/(10 R
f
)), 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 V
LIR
applied to the LIR pin. When V
LIR
is
applied, 1/10 of the voltage occurs across R
S
in the diagram. This voltage is input to the + side of the voltage
setting amplifier.
The motor current I
M
generates a voltage (I
M
×
R
f
) across the external resistor R
f
. 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:
I
limit
= V
LIR
/(10R
f
) [A]
V(V)
IN1
IN2
DEL
G
I
O
OUT1
OUT2
RD
t (s)
V
M
R
V
LIR
10R
f
1
2
3
4
相關(guān)PDF資料 |
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| LB1841V | Low-Saturation Current-Controlled Forward/Reverse Motor Driver |
| LB1843V | Low-saturation, current-controlled bidirectional motor driver |
| LB1845 | PWM Current Control Stepping Motor Driver(PWM電流控制馬達(dá)驅(qū)動器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB1841V | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Low-Saturation Current-Controlled Forward/Reverse Motor Driver |
| LB1843V | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Low-saturation, current-controlled bidirectional motor driver |
| LB1843V_12 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Low-saturation, current-controlled bidirectional motor driver |
| LB1843V_98 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Low-saturation, current-controlled bidirectional motor driver |
| LB1843V-MPB-E | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 AMUSEMENT RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型: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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