RT7204E datasheet(4/45 Pages) RICHTEK

4 / 45 page

RT7204E

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

RT7204E_DS-00

May 2024

Pin Configuration

(TOP VIEW)

VDD

GND

OPTO

VFB

IFB

GPIO1

D-

CC2

CC1

D+

GND

21 20 19

WQFN-24L 4x4

Functional Pin Description

Pin No.

Pin Name

Type

Pin Function

VDD

PWR

Supply input voltage.

GND

Ground.

OPTO

Current sink output for optocoupler connection. Can be configured as

open-drain output and ADC input.

VFB

Feedback input for constant-voltage loop.

IFB

Feedback input for constant-current loop.

GPIO1

A/D IO

General purpose input/output. Can be configured as I2C-SDA,

UART_TX/UART_RX, open-drain output, sourcing current, and ADC

input.

GPIO2

A/D IO

General purpose input/output. Can be configured as I2C-SCL,

UART_TX/UART_RX, open-drain output, sourcing current, and ADC

input.

8, 10, 13, 18,

21, 24

No internal connection.

GPIO3

A/D IO

General purpose input/output. Can be configured as open-drain output,

sourcing current, and ADC input.

VTR

Transformer voltage sense node for input voltage detection. Can be

configured as open-drain output and ADC input.

A/D IO

Remote thermal sensor connection node

for over-temperature

protection. Can be configured as open-drain output, sourcing current,

and ADC input.

CC1

A/D IO

Type-C connector Configuration Channel (CC) 1. It is used to detect a

cable plug event and determine the cable orientation. Can be

configured as ADC input.

CC2

A/D IO

Type-C connector Configuration Channel (CC) 2. It is used to detect a

cable plug event and determine the cable orientation. Can be

configured as ADC input.

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