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USB 2.0 Port Protection with Charger Detection

2014-04-0004

PT0502-1

04/28/14

1

PI3USB9281

Features

 USB-device charger detector

 Can tolerate USB3.0-PD with VBUS = 20V

 USB Charging-type detection

 Battery Charging 1.2 (BC1.2) – DCP

 Battery Charging 1.2 (BC1.2) – CDP

 Battery Charging 1.2 (BC1.2) – SDP

 Apple 1A, 2A, & 2.4A dedicated chargers

 Samsung-Fast chargers

 YD/T-1951 dedicated chargers

 CEA-936 Carkit#1 and #2 chargers

 Integrated Power FET

 VBUS Tolerance up to 28V

 1.7A Over-Current Protection (OCP)

 VBUS Over-Voltage Protection (OVP)

 Non-charging Accessory Detection

 USB On-The-Go (OTG) detection

 Mobile HDMI Link (MHL) device detection

 Wide Supply Voltage Range 3V to 5.5V

 Small Package: CSP 1.5x2.0-15L

Applications

 Personal Media Players

 Mobile Phones

 Tablet

Pin Configuration

Description

PI3USB9281 provides external detection for any USB-

device. The part can detect various chargers available in

the market, MHL accessories, OTG accessories, and car-

chargers per the CEA936 spec. It also integrates a power

switch with over-voltage and over-current protections.

The VBUSIN input pin can tolerate voltages up to 28V,

which is important for USB3.0-PowerDelivery enabled

ports. The new USB-3.0-PowerDelivery specification

supports voltages up to 20V.

The PI3USB9281 can operate over a temperature range

of -40 to +85°C.

Typical applications involve portable & consumer

applications, such as tablet, smart phones, digital

cameras, and notebooks with integrated Li-ion batteries

that charge via USB connectors.

Block Diagram

Figure 2. PI3USB9281 Block diagram

A

B

C

VBAT

INT

CHG

VBUS

OUT

VBUS

IN

VDDIO

SDA

SCL

ID

D-

ENB

DNH

DPH

GND

D+

1

2

3

4

5

Top View

Figure 1 CSP 1.5x2.0-15L with 0.4mm Pitch