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参数资料
| 型号： | LV8741V |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.75 A, PDSO44 |
| 封装： | 0.275 INCH, SSOP-44 |
| 文件页数： | 13/25页 |
| 文件大小： | 204K |
| 代理商： | LV8741V |
LV8741V
No.A0814-20/25
Output short-circuit protection circuit
To protect the IC from damage due to short-circuit of the output caused by lightening or ground fault, the output
short-circuit protection circuit to put the output in standby mode and turn on the alarm output is incorporated. Note
that when the RF pin is short-circuited to GND, this output short-circuit protection is not effective against shorting to
power.
(1) Output short-circuit protection operation changeover function
Changeover to the output short-circuit protection of IC is made by the setting of OCPM pin.
EMM
State
Low or Open
Auto reset method
High
Latch method
(2) Auto reset method
When the output current is below the output short-circuit protection current, the output is controlled by the input
signal. When the output current exceeds the detection current, the switching waveform as shown below appears
instead.
(When a 20k
resistor is inserted between RCHOP and GND)
When detecting the output short-circuit state, the short-circuit detection circuit is activated.
When the short-circuit detection circuit operation exceeds the timer latch time described later, the output is changed
over to the standby mode and reset to the ON mode again in 256
s (TYP). In this event, if the overcurrent mode still
continues, the above switching mode is repeated till the overcurrent mode is canceled.
(3) Latch method
Similarly to the case of automatic reset method, the short-circuit detection circuit is activated when it detects the
output short-circuit state.
When the short-circuit detection circuit operation exceeds the timer latch time described later, the output is changed
over to the standby mode.
In this method, latch is released by setting PS = “L”
(4) Output short-circuit condition warning output pin
EMO, warning output pin of the output short-circuit protection circuit, is an open-drain output.
EMO outputs ON when output short-circuit is detected.
ON
1V
OFF
1 to 2
s
Tscp
256
s (TYP)
OFF
ON
OCP voltage
Output current
Exceeding the
over-current
detection
current
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LV8741V_0712 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PWM Current Control Stepping Motor Driver |
| LV8741VB-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 |
| LV8741VGEVB | 功能描述:电源管理IC开发工具 EVM FOR LV8741V 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 |
| LV8741VL-MPB-E | 制造商:ON Semiconductor 功能描述:STEPPING MOTOR DRIVER - Ammo Pack |
| LV8741VL-TLM-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 |
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