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參數(shù)資料
| 型號： | LV8761V |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 4 A, PDSO36 |
| 封裝： | 0.275 INCH, SSOP-36 |
| 文件頁數(shù)： | 13/13頁 |
| 文件大?。?/td> | 293K |
| 代理商： | LV8761V |
LV8761V
Output short-circuit protection function
The LV8761V incorporates an output short-circuit protection circuit that turns off the output to prevent the IC from
fatal damage when the output is short-circuited due to short-to-power or short-to-ground fault. Either the “l(fā)atch-type,”
in which the output off state is latched when the short-circuit protection circuit is activated, or “auto reset-type,” in
which the output on/off states are repeated when the short-circuit protection circuit is activated, can be selected.
EMM Pin
Short-circuit Protection Mode
L
Latch type
H
Auto reset type
1.Protection function operation (Latch method)
The short-circuit protection circuit is activated when it detects the output short-circuit state. If the short-circuit state
continues for the internally preset period (
≈ 4μs), the protection circuit turns off the output from which the short-circuit
state has been detected. Then it turns the output on again after a lapse of the timer latch time described later. If the
short-circuit state is still detected, it changes all the outputs to the standby mode and retains the state. The latched state
is released by setting the PS to L.
4
μs
Short-circuit
Short-
circuit
Short-circuit
detection state
SCP voltage
H-bridge
output state
Internal counter
1st counter
start
1st counter
stop
1st counter
start
1st counter
end
2nd counter
start
2nd counter
end
Release
Threshold voltage
Output OFF
Output ON
Standby state
2.How to set the SCP pin constant (timer latch-up setting)
The user can set the time at which the outputs are turned off when a short-circuit occurs by connecting a capacitor
across the SCP and GND pins. The value of the capacitor can be determined by the following formula :
Timer latch-up : Tocp
Tocp
≈ C × V/I [s]
V : Comparator threshold voltage (1V typical)
I : SCP charge current (5
μA typical)
When a capacitor with a capacitance of 50pF is connected across the SCP and GND pins, for example, Tscp is
calculated as follows :
Tscp = 50pF
× 1V/5μA = 10μs
No.A1172-9/13
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LV8761V_10 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Forward/Reverse H-bridge Driver |
| LV8761VGEVB | 功能描述:電源管理IC開發(fā)工具 EVM FOR LV8761V 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 |
| LV8761V-MPB-E | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 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 |
| LV8761V-TLM-E | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 BRUSH MOTOR IC 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 |
| LV8762T | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Forward/Reverse H-bridge Driver |
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