STUSB4710 datasheet(8/34 Pages) STMICROELECTRONICS

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Inputs/outputs

STUSB4710

8/34

DocID030499 Rev 4

Name

Type

Description

Connection

VBUS_DISCH

Output

External discharge control

signal

VBUS_EN_SRC

20 V OD

VBUS source power path enable

– active low open-drain

To switch or power system

– ext. pull-up

VREG_1V2

Analog

1.2 V regulator output

1 µF typ. decoupling

capacitor

VREG_2V7

Analog

2.7 V regulator output

1 µF typ. decoupling

capacitor

VDD

20 V power

Main power supply (USB power

line)

From VBUS (system side)

Exposed pad

Exposed pad is connected to

ground

To ground

Table 3: Legend

Type

Description

Digital

Analog

Output pad

Input pad

Bidirectional pad

Open drain output

Pull-down

Pull-up

PWR

Power supply

GND

Ground

2.3

Pin description

2.3.1

CC1 / CC2

CC1 and CC2 are the configuration channel pins used for connection and attachment

detection, plug orientation determination and system configuration management across

USB Type-C cable. CC1/CC2 are HiZ during reset.

2.3.2

I2C interface pins

Table 4: I²C interface pin list

Name

Description

SCL

I²C clock

– needs external pull-up

SDA

I²C data

– needs external pull-up

2.3.3

VBUS_SENSE

This input pin is used to sense VBUS presence, monitor VBUS voltage and discharge VBUS on

USB Type-C receptacle side.

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