• 2 to 1 Power MUX:

            High Voltage Channel: 4.5V to 23V Range for VCHG

            V5V Channel: 4V to 5.5V Range for 5V Input

• Smooth Ramp Control during Channel Transitions
• Reverse Blocking Capability
• Bi-directional Control for High Voltage Channel
• Fast Role Swap
• I²C Interface
• CC Bypass and Isolation Control
• Dead Battery Wake-Up Function
• VCONN Path for E-Mark Cable
• Protection:

           Output Current Limit Setting

           OCP/OVP/TSD/UVP

The SY20816D is a 2 to 1 power MUX switch for USB PD applications. The SY20816D integrates two low-on resistance power paths: one high-voltage power path and a 5V power path. The high-voltage power path is a bi-directional channel. It can be configured as a sink or source port. Both directions have reverse blocking capability.

The SY20816D integrates the CC bypass path. The HOST_CCx is isolated from CONN_CCx in the case of a dead battery or when VCONN is applied. If CONN_CCx input is selected as CC line, CONN_CCx can be bypassed to HOST_CCx using the I 2C interface.

The SY20816D supports USB PD fast role swap. Once it's detected that the VBUS is lower than 4.75V, the high voltage channel will shut down, and the 5V power path will be turned on in 100μs and act as a new source