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參數(shù)資料
| 型號： | NIS5102QP1HT1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | High Side SMART HotPlug IC/Inrush Limiter/Circuit Breaker |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, DSO12 |
| 封裝： | 9 X 9 MM, LEAD FREE, PLLP-12 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大?。?/td> | 150K |
| 代理商： | NIS5102QP1HT1G |
NIS5102
http://onsemi.com
12
For this equation, V
ref
is the reference voltage of the
current limit circuit, and R
DSon
is the on resistance of the
SENSEFET. For more information on this, see application
note AND8140/D, “SMART HotPlug Current Limit
Function”.
This inherent property of the SENSEFET allows for
simple dual level current limiting, in which a short circuit
condition will see a lower level of limiting than will an
overload. This operation will exist in start up as well as under
normal operation, so the device will be able to differentiate
between a short and an overload.
As with all SMART HotPlug devices, the current limit will
never shutdown the device. Only the thermal limit will stop
the flow of current to the load. Once the current is stopped due
to the thermal limit, it will remain off until input power is
recycled for the latching version, or it will continuously retry
to start again if it is the autoretry version.
The ILimit graph shown in Figure 5 was generated from
the data of the ILimit characterization, the formula for the
short circuit curve is:
RILimit( )
152.86
ILimit
1.02
for TJ
25
°
C
where “ILimit” is the desired short circuit ILimit value, and
R
ILimit
is the programming resistor from the ILimit pin to the
source pin.
Turnon Surge
During the turnon event, there is a large amount of
energy dissipated due to the linear operation of the power
device. The energy rating is the amount of energy that the
device can absorb before the thermal limit circuit will shut
the unit down. This is very important specially for the latch
off device as it determines the maximum load capacitance
that the device can charge before the thermal limit shuts the
device down. The calculation of this is not very simple as it
depends on several factors such as the input voltage (Vin),
load capacitance (CL), current limit settings (ILimit) and
device’s thermal transient response, therefore, it is
recommended to do lab evaluations for these purposes.
Figure 20 shows the device’s thermal transient response for
minimum pad.
0.1
0.00001
1
10
100
0.0001
0.001
0.01
0.1
1
10
100
1000
TIME (seconds)
T
°
C
Figure 20. Thermal Transient Response
1in Pad
Min Pad
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NIS5102QP2HT1 | 功能描述:熱插拔功率分布 MI HI SDE SMRT HOTPLUG RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| NIS5102QP2HT1G | 功能描述:熱插拔功率分布 MI HI SDE SMRT HOTPLUG RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| NIS510X | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Low cap. diode array for 2 Line High Speed USB protection devic |
| NIS5112 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Electronic Fuse |
| NIS5112_07 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Electronic Fuse |
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