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2014-04-0004

PT0502-1

04/28/14

2

PI3USB9281

USB 2.0 Port Protection with Charger Detection

Pin Descriptions

Name

Type

Default State

Description

USB Interface

DPH

Signal Path

Open

D+ signal switch path, dedicated USB port to be connected to the resident USB

transceiver on the device

DNH

Signal Path

Open

D- signal switch path, dedicated USB port to be connected to the resident USB

transceiver on the device

Connector Interface

ID

Signal Path

Open

Connected to the USB connector ID pin and used for detecting accessories

D+

Signal Path

Open

Connected

to

the

USB

connector

D+

pin;

depending

on

the

signaling

mode

D-

Signal Path

Open

Connected to the USB connector D- pin; depending on the signaling mode

Power Path

NA

Input voltage supply pin to be connected to the VBUS pin of the USB connector

Power Interface

Power

NA

Input voltage supply pin to be connected to the device battery output or to an

internal regulator

Power

NA

Baseband processor interface I/O supply pin

ENB

Input

Hi-Z

System enable for the circuit (Active Low)

GND

Power

NA

Ground

Charger Interface

Power Path

NA

Output voltage supply pin to be connected to the source voltage pin on the charger IC

CHG

Open-Drain

Output

Hi-Z

Open-drain active LOW output, used to signal the charger IC that a charger has been

attached

I

SCL

Input

Hi-Z

I

SDA

Open-Drain I/O

Hi-Z

I

INTB

CMOS Output

LOW

Interrupt active LOW output used to prompt the phone baseband processor to read the I

register bits, indicates a change in ID pin status or accessory attach status

Maximum Ratings

StorageTemperature...................................................................................-65oC to +150oC

Supply Voltage fromBattery/Baseband.....................................................-0.5V to +6.5V

Supply Voltage fromMicro-USB Connector........................................-0.5V to +28.0V

Switch I/O Voltage USB................................................................................-1.0V to +5.5V

Input Clamp Diode current..............................................................................................50mA

Charger Detect CHG Pin Sink current.........................................................................30mA

Switch I/O Current (Continuous) USB.......................................................................50mA

Switch I/O Switch Peak Current (Pulsed at 1ms Duration, <10% Duty Cycle)

USB, and All Other Channels.....................................................................................150mA

Charger FET.............................................................................................................................2A

ESD: HBM .....................................................................................................................2000V

HB M (USB connector pins: VBUSIN, D+, D+, ID to GND).................6000V

Recommended operation conditions

Symbol

Parameter

Min.

Max.

Units

Battery Supply Voltage

3.0

5.5

V

Battery Supply Voltage Threshold

-

3.0

V

4.0

5.5

V

Processor Supply Voltage

1.8

5.5

V

Switch I/O Voltage

USB Path Active

0

3.6

V

Capacitive Load on ID Pin for Reliable Accessory Detection

0

1.0

nF

Operating Temperature

-40

85

°C

Note:

Stresses greater than those listed under MAXIMUM

RATINGS may cause permanent damage to the

device. This is a stress rating only and functional

operation of the device at these or any other

conditions above those indicated in the operational

sections of this specification is not implied.

Exposure to absolute maximum rating conditions

for extended periods may affect reliability.