参数资料
| 型号： | LV8773-E |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/14页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DVR PWM CC 2CH 28-DIP |
| 标准包装： | 20 |
| 系列： | * |
LV8773
(5) Setting constant-current control
When the current of the motor reaches up to a set current by setting the output current, this IC does the short brake
control by the automatic operation so that the current should not increase more than it.
Set current
Coil current
BLANKING time
Chopping cycle
Current mode
CHARGE
SLOW
Based on the voltage input to the VREF pin and the resistance connected between RF and GND, the output current
that is subject to the constant-current control is set using the calculation formula below :
IOUT = (VREF/5)/RF resistance
* The above setting is the output current at 100% of each excitation mode.
The voltage input to the VREF pin can be switched to two-step settings depending on the statuses of the ATT.
Attenuation function for VREF input voltage
ATT
Low
High
Current setting reference voltage attenuation ratio
100%
50%
The formula used to calculate the output current when using the function for attenuating the VREF input voltage is
given below.
IOUT = (VREF/5) × (attenuation ratio)/RF resistance
Example : At VREF of 1.5V, a reference voltage setting of 100% (ATT = L) and an RF resistance of 0.3 Ω , the output
current is set as shown below.
IOUT = 1.5V/5 × 100%/0.3 Ω = 1.0A
If, in this state, ATT = H will be as follows :
IOUT = 1.0A × 50% = 500mA
No.A1961-8/14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LV8773-E | 制造商:ON Semiconductor 功能描述:OPTOCOUPLERS; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No ;RoHS Compliant: No |
| LV8773GEVB | 功能描述:电源管理IC开发工具 EVM FOR LV8773 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| LV8773Z-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 |
| LV8800C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| LV8800V | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Bi-CMOS IC For Notebook PC Fan Motor Driver |
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