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參數(shù)資料
| 型號： | LV8772 |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, DIP28 |
| 封裝： | DIP-28 |
| 文件頁數(shù)： | 7/17頁 |
| 文件大?。?/td> | 246K |
| 代理商： | LV8772 |
LV8772
No.A1975-15/17
Output short-circuit protection function
This IC incorporates an output short-circuit protection circuit that, when the output has been shorted by an event such
as shorting to power or shorting to ground, sets the output to the standby mode and turns on the warning output in
order to prevent the IC from being damaged.
This function sets the output to the standby mode for both channels by detecting the short-circuiting in one of the
channels.
(1) Output short-circuit protection method
The output short-circuit protection method of LV8772 is a latch method to turn off the output when the output current
exceeds the detection current, and to maintain the state.
The detection of the output short-circuited state by the IC causes the output short-circuit protection circuit to be
activated.
All the outputs of correspondence ch side where the short-circuit was first detected are switched to the standby mode
when the short-circuit is the consecutive between internal timers (approximately 4
μs), and the state is maintained.
This state is released by setting ST to low.
(2) Unusual condition warning output pins (EMO)
The LV8772 is provided with the EMO pin which notifies the CPU of an unusual condition if the protection circuit
operates by detecting an unusual condition of the IC. This pin is of the open-drain output type and when an unusual
condition is detected, the EMO output is placed in the ON (EMO = Low) state.
Furthermore, the EMO pin is placed in the ON state when one of the following conditions occurs.
1. Shorting-to-power, shorting-to-ground, or shorting-to-load occurs at the output pin and the output short-circuit
protection circuit is activated.
2. The IC junction temperature rises and the thermal protection circuit is activated.
Short-circuit
Short-
circuit
Short-circuit
detection state
H-bridge
output state
Internal counter
1st counter
start
1st counter
stop
1st counter
start
1st counter
end
Release
Output ON
Standby state
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LV8772-E | 功能描述:馬達/運動/點火控制器和驅(qū)動器 MOTOR DRIVER 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LV8772GEVB | 功能描述:電源管理IC開發(fā)工具 EVABOARD FOR LV8772 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LV8773 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Constant-Current Control Stepping Motor Driver |
| LV8773-E | 功能描述:馬達/運動/點火控制器和驅(qū)動器 PRINTER 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| 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 |
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