1 General Description

The RT1735 is an USB Type-C interface overvoltage

protection IC.

The RT1735 protects the high voltage shorted to VBUS

to adjacent pins of CC/SBU up to 28V due to USB

Power Delivery (PD), which allows VBUS from 3.3 to

28V sourcing.

The RT1735 is integrated with the protection against

ESDs as per IEC61000-4-2 standards, with contact

discharge of ?8kV on CON_CC1/CON_CC2, D1/D2

and CON_SBU1/ CON_SBU2. The surge immunity

level of CON_CC1/CON_CC2 and CON_SBU1/

CON_SBU2 is up to ?36V. Besides, the ultra-fast OVP

response time of 100ns can protect the system side of

application IC from damage.

The RT1735 is available in a 3x3mm WQFN package.

The recommended junction temperature range is ?40?C

to 125?C, and the ambient temperature range is ?40?C

to 85?C.

2 Features

? 4-Channel of short to VBUS Overvoltage

Protection (CON_CC1, CON_CC2, CON_SBU1

and CON_SBU2)

? IEC61000-4-2 Contact Discharge Protection

? CON_CC1/CON_CC2: ?8kV

? CON_SBU1/CON_SBU2: ?8kV

? D1/D2: ?8kV

? High Absolute Maximum Ratings = 36V of

CON_CC1, CON_CC2, CON_SBU1 and

CON_SBU2

? 100ns Ultra-Fast OVP Response Time of CC/SBU

? 255m? Ultra-Low RON of CC Switch Typical

? 3.6? Low RON of SBU Switch Typical

? 20?A Low Quiescent Current in Standby

? Bandwidth of 200MHz for SBU Switch

? Dead Battery Support

? 20-Pin 3x3mm WQFN Package

3 Applications

? PC/Notebook

? Smart Phone/Tablet

? TV/Monitor

? USB-C Dongle/Docking/Hubs