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參數(shù)資料
| 型號： | LV8741V |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.75 A, PDSO44 |
| 封裝： | 0.275 INCH, SSOP-44 |
| 文件頁數(shù)： | 3/25頁 |
| 文件大小： | 204K |
| 代理商： | LV8741V |
LV8741V
No.A0814-11/25
Input Pin Function
(1) Chip enable function
This IC is switched between standby and operating mode by setting the ST pin. In standby mode, the IC is set to
power-save mode and all logic is reset. In addition, the internal regulator circuit and charge pump circuit do not
operate in standby mode.
ST
Mode
Internal regulator
Charge pump
Low or Open
Standby mode
Standby
High
Operating mode
Operating
(2) Drive mode switching pin function
The IC drive mode is switched by setting the DM pin. In STM mode, stepping motor channel 1 can be controlled by
the CLK-IN input. In DCM mode, DC motor channel 2 or stepping motor channel 1 can be controlled by parallel
input. Stepping motor control using parallel input is 2-phase or 1-2 phase full torque.
DM
Drive mode
Application
Low or Open
STM mode
Stepping motor channel 1 (CLK-IN)
High
DCM mode
DC motor channel 2 or stepping motor channel 1 (parallel)
STM mode (DM = Low or Open)
(1) STEP pin function
Input
ST
STP
Operating mode
Low
*
Standby mode
High
Excitation step proceeds
High
Excitation step is kept
(2) Excitation mode setting function
Initial position
MD1
MD2
Excitation mode
Channel 1
Channel 2
Low
2 phase excitation
100%
-100%
High
Low
1-2 phase excitation (full torque)
100%
0%
Low
High
1-2 phase excitation
100%
0%
High
W1-2 phase excitation
100%
0%
This is the initial position of each excitation mode in the initial state after power-on and when the counter is reset.
(3) Constant-current control reference voltage setting function
ATT1
ATT2
Current setting reference voltage
Low
VREF/3
×100%
High
Low
VREF/3
×67%
Low
High
VREF/3
×50%
High
VREF/3
×33%
The voltage input to the VREF pin can be switched to four-step settings as the reference voltage for setting the output current. This is effective for
reducing power consumption when motor holding current is supplied.
Set current value calculation method
The reference voltage is set by the voltage applied to the VREF pin and the two inputs ATT1 and ATT2. The output
current (output current at a constant-current drive current ratio of 100%) can be set from this reference voltage and the
RF resistance value.
IOUT = (VREF/3 × Voltage setting ratio)/RF resistor
(Example) When VREF = 1.5V, setting current ratio = 100% [(ATT1, ATT2) = (Low, Low)] and RF resistor = 0.5
,
the following output current flows :
IOUT = 1.5V/3 × 100%/0.5 = 1A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| LV8741V_0712 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Current Control Stepping Motor Driver |
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| LV8741VL-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 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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