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參數(shù)資料
| 型號： | NUP2202W1 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Low Capacitance SC-88 Diode-TVS Array for HIGH Speed Data Lines Protection |
| 中文描述： | 低電容資深- 88二極管二極管的高速數(shù)據(jù)線路保護陣列 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 76K |
| 代理商： | NUP2202W1 |
NUP2202W1
http://onsemi.com
3
APPLICATIONS INFORMATION
The NUP2202W1 is a low capacitance TVS diode array
designed to protect sensitive electronics such as
communications systems, computers, and computer
peripherals against damage due to ESD events or transient
overvoltage conditions. Because of its low capacitance, it
can be used on high speed I/O data lines. The integrated
design of the NUP2202W1 offers surge rated, low
capacitance steering diodes and a TVS diode integrated in a
single package (SC88). If a transient condition occurs, the
steering diodes will drive the transient to the positive rail of
the power supply or to ground. The TVS device protects the
power line against overvoltage conditions to avoid damage
to the power supply and any downstream components.
NUP2202W1 Device Configuration Options
The NUP2202W1 is able to protect two data lines against
transient overvoltage conditions by driving them to a fixed
reference point for clamping purposes. The steering diodes
will be forward biased whenever the voltage on the
protected line exceeds the reference voltage (Vf or Vcc+Vf).
The diodes will force the transient current to bypass the
sensitive circuit.
Data lines are connected at pins 1 and 6. The negative
reference is connected at pin 2. This pin must be connected
directly to ground by using a ground plane to minimize the
PCB’s ground inductance. It is very important to reduce the
PCB trace lengths as much as possible to minimize parasitic
inductance.
Option 1
Protection of two data lines and the power supply using
Vcc as reference.
6
5
4
1
2
3
I/O 1
I/O 2
V
CC
For this configuration, connect pin 5 directly to the
positive supply rail (Vcc), the data lines are referenced to the
supply voltage. The internal TVS diode prevents
overvoltage on the supply rail. Biasing of the steering diodes
reduces their capacitance.
Option 2
Protection of two data lines with bias and power supply
isolation resistor.
V
CC
10 k
I/O 1
I/O 2
6
5
4
1
2
3
The NUP2202W1 can be isolated from the power supply
by connecting a series resistor between pin 5 and Vcc. A
10 k resistor is recommended for this application. This
will maintain bias on the internal TVS and steering diodes,
reducing their capacitance.
Option 3
Protection of two data lines using the internal TVS diode
as reference.
I/O 1
I/O 2
NC
6
5
4
1
2
3
In applications lacking a positive supply reference or
those cases in which a fully isolated power supply is
required, the internal TVS can be used as the reference. For
these applications, pin 5 is not connected. In this
configuration, the steering diodes will conduct whenever the
voltage on the protected line exceeds the working voltage of
the TVS plus one diode drop (Vc=Vf + V
TVS
).
ESD Protection of Power Supply Lines
When using diodes for data line protection, referencing to
a supply rail provides advantages. Biasing the diodes
reduces their capacitance and minimizes signal distortion.
Implementing this topology with discrete devices does have
disadvantages. This configuration is shown below:
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| NUP2202W1T2G | 功能描述:TVS二極管陣列 LOW CAP DIODE TVS ARRAY RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C |
| NUP2202W1T2G-CUT TAPE | 制造商:ON 功能描述:NUP2202W Series 20 V 5 pF Uni-Directional Transient Voltage Suppressor - SC-88 |
| NUP2301 | 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 |
| NUP2301MW6T1 | 功能描述:整流器 Low Cap. for ESD RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel |
| NUP2301MW6T1/D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Low Capacitance Diode Array for ESD Protection in Two Data Lines |
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