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| 型号： | NUP4201DR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC TVS LO CAP HS DATA 500W 8SOIC |
| 标准包装： | 1 |
| 电压 - 反向隔离（标准值）： | 5V |
| 电压 - 击穿： | 6V |
| 功率（瓦特）： | 500W |
| 电极标记： | 4 通道阵列 - 单向 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 标准包装 |
| 其它名称： | NUP4201DR2GOSDKR |
NUP4201DR2
APPLICATIONS INFORMATION
The new NUP4201DR2 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 voltage conditions. Because of its low
capacitance, it can be used in high speed I/O data lines. The
integrated design of the NUP4201DR2 offers surge rated,
Option 2
Protection of four data lines with bias and power supply
isolation resistor.
I/O 1
I/O 2
V CC
low capacitance steering diodes and a TVS diode integrated
1
8
in a single package (SO ? 8). 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.
NUP4201DR2 Configuration Options
The NUP4201DR2 is able to protect up to four data lines
10 K
I/O 3
I/O 4
2
3
4
Figure 6.
7
6
5
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 (Vcc+Vf). The
diodes will force the transient current to bypass the sensitive
circuit.
Data lines are connected at pins 1, 4, 6 and 7. The negative
reference is connected at pins 5 and 8. These pins 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 inductances.
The NUP4201DR2 can be isolated from the power supply
by connecting a series resistor between pins 2 and 3 and Vcc.
A 10 k W resistor is recommended for this application. This
will maintain a bias on the internal TVS and steering diodes,
reducing their capacitance.
Option 3
Protection of four data lines using the internal TVS diode
as reference.
I/O 1
I/O 2
Option 1
Protection of four data lines and the power supply using
Vcc as reference.
I/O 1
I/O 2
NC
NC
1
2
3
4
8
7
6
5
I/O 3
1
8
I/O 4
V CC
I/O 3
I/O 4
2
3
4
7
6
5
Figure 7.
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, pins 2 and 3 are not connected. In this
configuration, the steering diodes will conduct whenever the
Figure 5.
For this configuration, connect pins 2 and 3 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.
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:
http://onsemi.com
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NUP4201DR2G | 制造商:ON Semiconductor 功能描述:; Diode Type:Unidirectional TVS; Stand-O |
| NUP4201MR6 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Transient Voltage Suppressors |
| NUP4201MR6/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Low Capacitance Surface Mount Diode-TVS Array for Protection in Four High Speed Data Lines |
| NUP4201MR6_09 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Transient Voltage Suppressors |
| NUP4201MR6T1 | 功能描述:TVS二极管阵列 Low Cap. TVS Array RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C |
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