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參數(shù)資料
| 型號： | FDC6323 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Integrated Load Switch |
| 中文描述： | 綜合負(fù)荷開關(guān) |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 264K |
| 代理商： | FDC6323 |
FDC6323L Load Switch Application
General Description
This device is particularly suited for compact
computer peripheral switching applications
where 8V input and 1A output current capability
are needed. This load switch integrates a small
N-Channel Power MOSFET (Q1) which drives a
large P-Channel Power MOSFET (Q2) in one
tiny SuperSOT
TM
-6 package.
A load switch is usually configured for high side
switching so that the load can be isolated from
the active power source. A P-Channel Power
MOSFET, because it does not require its drive
voltage above the input voltage, is usually more
cost effective than using an N-Channel device in
this particular application. A large P-Channel
Power MOSFET minimizes voltage drop. By
using a small N-Channel device the driving
stage is simplified.
Component Values
R1
R2
C1
Typical 10k - 1M
Typical 0 - 100k
(optional)
Typical 1000pF
(optional)
Design Notes
R1 is needed to turn off Q2.
R2 can be used to soft start the switch in case the output capacitance Co is small.
R2 should be at least 10 times smaller than R1 to guarantee Q1 turns on.
By using R1 and R2 a certain amount of current is lost from the input. This bias current loss is given by
the equation
when the switch is ON. I
BIAS_LOSS
can be minimized by selecting a large
R
1
+
R
2
I
BIAS
_
LOSS
=
Vin
value for R1.
R2 and C
of Q2 make ramp for slow turn on. If excessive overshoot current occurs due to fast turn on,
additional capacitance C1 can be added externally to slow down the turn on.
FDC6323L Rev.F
APPLICATION CIRCUIT
IN
OUT
ON/OFF
R1
R2
C1
LOAD
Co
Q2
Q1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FDC6323L | 功能描述:MOSFET SSOT-6 LOAD SW 8V RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
| FDC6324 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Integrated Load Switch |
| FDC6324L | 功能描述:MOSFET SSOT-6 LOAD SW 20V RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
| FDC6324L | 制造商:Fairchild Semiconductor Corporation 功能描述:Power Distribution (Load) Switch IC |
| FDC6324L_Q | 功能描述:MOSFET SSOT-6 LOAD SW 20V RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
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