AZC002-02N 查看數據表（PDF） - Amazing Microelectronic

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AZC002-02N

Low Capacitance ESD Protection Array For High Speed Data Interfaces

Amazing Microelectronic 

AZC002-02N

Low Capacitance ESD Protection Array

For High Speed Data Interfaces

C. Applications

1. Universal Serial Bus (USB) ESD Protection

The AZC002-02N can be used to protect the

USB port on the monitors, computers,

peripherals or portable systems. The ESD

protection scheme for single USB ports is shown

in Fig. 3. In the Fig.3, the voltage bus (VBUS) of

USB port is connected to the power pin (pin 4) of

AZC002-02N. Each data line (D+/D-) of USB port

is connected to the ESD protection pin (pin2/pin3)

of AZC002-02N.

When ESD voltage pulse appears on the data

line, the ESD pulse current will be conducted by

AZC002-02N away from the USB controller chip.

In addition, the ESD pulse current also can be

conducted by AZC002-02N away from the USB

controller chip when the ESD voltage pulse

appears on the voltage bus (VBUS) of USB port.

Therefore, the data lines (D+/D-) and voltage bus

(VBUS) of two USB ports are complementally

protected with an AZC002-02N.

V BUS

1

4

USB

Controlle r

CT CT

2

3

RT

RT

GND

V BUS

D+

USB

D_ Port

GND

Fig. 3 ESD Protection scheme for single USB ports by using AZC002-02N.

Revision 2011/07/30 ©2011-2012 Amazing Micro.

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