Datasheet

HUSB238A

©2023 Hynetek Semiconductor Co., Ltd. All rights reserved.

Page 5 of 22

Pin No. Pin Name

Type1 Description

Connected to VDD = I2C mode with slave address 62H

Connected to GND = I2C mode with slave address 42H

Float = GPIO mode

In output mode, this pin (ORIENT) is push-pull output to indicate the connection

status.

Low = CC1 of USB Type-C receptacle is connected

High = CC2 of USB Type-C receptacle is connected

Note: a 900 kΩ resistor should be used when connecting to VDD or GND to reduce

standby current.

9

SDA/SNK_VSET

AIO

Dual functions pin. In I2C mode, this pin (SDA) is the data line of I2C bus.

In GPIO mode, this pin (SNK_VSET) combined with SNK_ISET to determine the

requested voltage.

10

SCL/SNK_ISET

AIO

Dual functions pin. In I2C mode, this pin (SDA) is the clock line of I2C bus.

In GPIO mode, this pin (SNK_ISET) combined with SNK_VSET to determine the

requested current.

11

INT_N

AIO

In I2C mode, this pin (INT_N) is an open-drain output to request the attention of

processor by pulling down this pin.

12

EN_N

AI

Chip enabled pin. It is pulled up internally and HUSB238A is enabled by pulling this

pin to GND.

13

FAULT/OUT2

DO

General output pin. The output purpose can be configured as a FAULT pin. When

used as FAULT pin, the device pulls this pin high if the power adapter cannot supply

the required voltage or current or if an OVP/UVP/OTP event is detected. This pin can

be also configured as General output pin (OUT2) controller by I2C master.

14

FLGIN

DI

General input pin. This input signal can be used to disable the GATE driver and

generate an interrupt when there is a valid high voltage is detected. It can be also

configured as just an interrupt source for INT_N, not disabling GATE driver.

15

GATE

O

Open drain output. This pin is employed to control the external VBUS switch.

16

VBUS

P

This pin has multiple functions including VBUS voltage detection, the discharge path

for VBUS pin and the Input supply 2 for internal circuitry. When VDD is unpowered,

HUSB238A could consume power from this pin.

17

GND

P

Ground connection point

1 Legend:

A = Analog Pin

P = Power Pin

D = Digital Pin

I = Input Pin

O = Output Pin