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參數(shù)資料
| 型號(hào)： | L9611C |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | DIP-16 |
| 文件頁(yè)數(shù)： | 15/15頁(yè) |
| 文件大?。?/td> | 430K |
| 代理商： | L9611C |
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Product(s)
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Product(s)
L9610
9/15
4.5
Short circuit current regulation
The maximum load current in the short circuit condition can be chosen by the value of the
current sensing resistor RS according to :
Two identical VS compatible comparators are provided to realize the short circuit protection.
After reaching the lower threshold voltage (typical value VSI-10 mV), the first comparator
enables the timer and the gate is driven with the full continuous pump voltage : when the
upper threshold voltage value is reached the second comparator maintains the chosen ISC
driving the NMOS gate in continuous mode.
This function, showed in Figure 5., speeds up the switch on phase for a lamp as a load.
4.6
Bandgap voltage reference
The circuit provides a reference voltage which may be used as control input voltage through
a resistive divider. This reference is protected against the short circuit current.
4.7
Charge pump
The charge pump circuit holds the N-MOS gate above the supply voltage during the ON
phase. This circuit consists of an RC astable which drives a comparator with a push-pull
output stage. The external charge pump capacitor CP must be at least equal to the NMOS
parasitic input capacitance.
For fast gate voltage variation CP must be increased or the bootstrap function can be used.
The bootstrap capacitor should be at least 10 times greater than the PowerMOS parasitic
capacitance.
The charge pump voltage VPUMP can reach to :
The circuit is disabled if the supply voltage is higher than VSH.
I
SC
V
SI RS
=
V
PUMP
2V
S
V
BE
–
V
CESAT
–
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9612 | 制造商:Leviton Manufacturing Co 功能描述: |
| L9613 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DATA INTERFACE |
| L9613B | 功能描述:功率驅(qū)動(dòng)器IC Med Spd Data Intrfce RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L9613B013TR | 功能描述:功率驅(qū)動(dòng)器IC Med Spd Data Intrfce RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L9615 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CAN BUS TRANSCEIVER |
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