RT7800B
Simplified Application Circuit
(1) Provider Application with a DC-DC Converter
V
SYS
+20V
(optional)
(optional)
Q1B
Q2A
Q2B
R
CS
DC-DC PWM
Converter
VBUS
Q1A
CV
Enable
Control Control
2
OCP/
Current
Detector
GP
GC1
GC2A
Provider
I C(slave)
EC
GPIOs
CC1/2
VCONN
CC1/2
RT7800B
Type-C
Receptacle
GPIOs
MUX
TX, RX
(2) Provider Application without a DC-DC Converter
V
+5V
SYS5
Q2A
Q2B
Q1B
R
CS
Q1A
V
VBUS
SYS12
+12V
Rising
Time
control
C
GC1
Rising
Time
C
GP
control
GP
OCP/
Current
GC2A
GC1
Provider
Detector
2
I C(slave)
GPIOs
EC
CC1/2
VCONN
RT7800B
CC1/2
Type-C
Receptacle
GPIOs
MUX
TX, RX
(3) Dual Role Application with a DC-DC Converter
Q2A
Q2B
VBUS
V
SYS
Q1B
Q1A
R
CS
DC-DC PWM
Converter
Charger
(optional)
Provider/
Consumer
CV
Enable
OCP/
Current
Detector
GP
GC2
Control Control
I2C(master)
I2C(slave)
GPIOs
CC1/2
VCONN
RT7800B
EC
CC1/2
Type-C
Receptacle
GPIOs
MUX
TX, RX
Copyright 2017 Richtek Technology Corporation. All rights reserved.
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is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS7800B-00 May 2017
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
