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TPD4E001 Datasheet(Fiches technique) 7 Page - Texas Instruments

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Numéro de pièce TPD4E001
Description  4-Channel ESD Protection Array With 1.5-pF I/O Capacitance
Télécharger  18 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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 7 page
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IO3
IO4
GND
IO2
IO1
0.1 µF
V
CC
USB
Controller
R
T
V
BUS
D+
D–
GND
V
BUS
D+
D–
GND
D1
TPD4E001-Q1
www.ti.com
SLLSEG0D – MARCH 2013 – REVISED AUGUST 2015
7.4 Device Functional Modes
The TPD4E001-Q1 device is a passive integrated circuit that triggers when voltages are above VBR or below the
lower diodes VF (–0.6 V). During ESD events, voltages as high as ±8 kV (contact) can be directed to ground via
the internal diode network. Once the voltages on the protected line fall below the trigger levels of TPD4E001-Q1
(usually within 10’s of nano-seconds) the device reverts back to its high-impedance state.
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The TPD4E001-Q1 device is a TVS diode array which is typically used to provide a path to ground for dissipating
ESD events on high-speed signal lines between a human interface connector and a system. As the current from
ESD passes through the TVS, only a small voltage drop is present across the diode. This is the voltage
presented to the protected IC. The triggered TVS holds this voltage, VCLAMP, to a safe level for the protected IC.
8.2 Typical Application
For this design example, one TPD4E001-Q1 device is being used in a dual USB 2.0 application. This will provide
a complete port protection scheme.
Figure 4. Typical Application Schematic
Copyright © 2013–2015, Texas Instruments Incorporated
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