NX20P0407
USB Type C CC and SBU Protection IC
Rev 1.1 — 23 Jan 2018
Datasheet
1. General description
NX20P0407 is a single chip USB type C port protection solution. CC1/CC2 and
SBU1/SBU2 pins in system side are protected from up to 28V short to VBUS, which pins
are located right next VBUS pins.
USB Type C allows VBUS voltage to increase up to 20V through Power delivery protocol,
the concern is that these CC1/2 and SBU1/2 pins can be shorted with VBUS when
plugging out with mechanical twisted connector since Type C connector contact pin is
25% closer to each other than prior generation connector, micro USB which most mobile
devices have been using. Another concern is that moisture or fine dust may cause short
to 20V VBUS with next to pins.
NX20P0407 enables CC and SBU to be more robust in even abnormal conditions.
NX20P0407 has 28V DC tolerant on CON_CC1, CON_CC2, CON_SBU1 and
CON_SBU2 pins in connector side and quickly disconnects switches if the voltage is
above over voltage threshold, CC1, CC2, SBU1 and SBU2 in system side are protected
from the high voltage.
NX20P0407 integrates IEC 61000-4-2 ESD protection on CON_CC1 and CON_CC2,
+15KV air discharge and +8KV contact discharge, which helps to reduce external BOM
cost. NX20P0407 CON_CC1 and CON_CC2 pins are designed to be protected from
surge up to +/- 35V
2. Features and benefits
USB Type C CC1/2 and SBU1/2 short protection to VBUS
CON_CC1 / CON_CC2 : 28VDC
CON_SBU1 / CON_SBU2 : 28VDC
Rd circuit in CON_CC1/CON_CC2 in dead battery
Low Rdson switch
CC switch : 160mΩ
SBU switch : 3.6Ω
Robust ESD immunity for CON_CC1/2
IEC 61000-4-2 Contact discharge: 8KV
IEC 61000-4-2 Air discharge: 15KV
+/- 35V surge protection on CON_CC1/2
Low SYS leakage current : 32uA
CC1/2 leakage current : < 1uA
Fast OVP turn off time : 60ns
