ESDR0502N_16 Datasheet, PDF (4/5 Pages) ON Semiconductor – Ultra Low Capacitance ESD Protection Array

ESDR0502N
APPLICATION INFORMATION
Protecting USB 2.0 Interfaces
The USB interface consists of Data (D− and D+) lines and
a 5.5 V bus, which are all vulnerable to ESD and cable
discharge events. Each ESDR0502N device will protect the
four USB connections (V_CC, D+, D−, and GND) of one USB
port. When the voltage on the data lines exceed the
breakdown voltage of the protection device, the internal
rectifiers are forward biased conducting the transient current
away from the protected controller chip. The TVS diode
suppresses ESD strikes directly on the voltage bus and
directs the surge to ground, protecting both the power and
data pins.
USB Controller
1
6
D+
2
5
D−
3
4
ESDR0502N
USB Connector
VBUS
D+
D−
GND
Figure 6.
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