NEW PRODUCT BRIEF
Product Databrief
PI3USB9281A
USB 2.0 Port Protection with Charger Detection
Description
Features
PI3USB9281A provides external detection for any USB-de-
USB-device charger detector
vice. The part can detect various chargers available in the
Can tolerate USB3.0-PD with VBUS = 20V
market, MHL accessories, OTG accessories, and car-char-
gers per the CEA936 spec. It also integrates a power switch USB Charging-type detection
with over-voltage and over-current protections. The V
BUSIN
Battery Charging 1.2 (BC1.2) DCP
input pin can tolerate voltages up to 28V, which is important
Battery Charging 1.2 (BC1.2) CDP
for USB3.0-Power Delivery enabled ports. The new USB-3.0-
Battery Charging 1.2 (BC1.2) SDP
Power Delivery specification supports voltages up to 20V.
Apple 1A, 2A, & 2.4A dedicated chargers
The PI3USB9281A can operate over a temperature range
of -40 to +85C. Typical applications involve portable &
Samsung-Fast chargers
consumer applications, such as tablet, smart phones, digital
YD/T-1951 dedicated chargers
cameras, and notebooks with integrated Li-ion batteries that
CEA-936 Carkit#1 and #2 chargers
charge via USB connectors.
Integrated Power FET
Applications
VBUS Tolerance up to 28V
Personal Media Players
1.7A Over-Current Protection (OCP)
Mobile Phones
Tablet VBUS Over-Voltage Protection (OVP)
Non-charging Accessory Detection
Block Diagram
USB On-The-Go (OTG) detection
Mobile HDMI Link (MHL) device detection
VBUSOUT
Wide Supply Voltage Range 3V to 5.5V
Driver 2
I C Programmability
OCPOVP
Detect
VBAT
Small Package: CSP 1.5x2.0-15L
DPH
USB
VBUSIN
Data Switch
Application Diagram
DNH
D-
USB
Charger
D+
Port
Detect
Notebook
ID
VDDIO D0-D3 DP
Tx1, Rx1 (D0-D1)
DP 1.2 ReDriver
GND
2x2 Cross bar
SDA Float Detect
Tx2, Rx2 (D2-D3)
Switch I/O HUB
USB3
Switch Tx-Rx
SCL
USB 3.0 ReDriver
Control
USB3
INTB
2
ADC ID
& I C Slave CC1 2
I C
D+,D-
External
CHG 2
Detect
I C
Detection
USB Port Detector PI3USB9281A
CC2
EN
Control
AUXHPD+
2
I C
SBU1,SBU2 PI3DBS3224 AUXHPD-
PI3USB9281
2x4
D+,D-
USB Charger Detect
Cross Bar Switch
D+,D-
D+,D-
(Top & Bottom)
Vbus
Notebook PC
www.pericom.com | 1-408-232-9100
Type C Connector