New Product AnnouncementAP43781USB PD Controller Supports DisplayPort Over USB Type-C Alternate Mode The DIODES Advantage This 100W USB PD protocol controller monitors USB Type-C ports, DFP power charging, and UFP data transfer applications. ■ AP43781 Detects USB Type-C Alternate Mode; Drives a USB/DP Mux for DisplayPort Over USB Type-C Enables Downstream Facing Port (DFP) charging and Upstream Facing Port (UFP) video data traffic management ■ I2C Interface Controls High-Speed Mux Switches and ReDrivers for Data Transfer, and DC-DC Converters for Charging Supports inter-chip communication for low standby power in multiple USB Type-C port applications ■ Flexible Program Modes OTP (one-time programmable) ROM (Read Only Memory) is provided for main firmware; multi-time-programmable ROM is provided for user-configuration data ■ E-Marker Cable Detection with Built-In VCONN and Overcurrent Protection Supports USB Type-C cable authentication The AP43781 is a USB Type-C® Power Delivery (PD) 3.1 SPR (Standard Power Range, 3.3V~21V) controller that supports up to 100W power source applications with legacy capabilities. The device is compliant with USB Type-C specification and USB power delivery specification Rev. 3.1. It supports PPS with 20mV/step resolution and 50mA/step current resolution for optimal battery thermal management. In addition, cable-loss compensation and Start of Packet (SOP) command for e-Marker detection are supported. The device supports DisplayPort™ Alternate Mode by decoding the CC pin handshaking and via I2C, thereby controlling the SS data switches. The AP43781 offers comprehensive safety features, including overvoltage protection (OVP), undervoltage protection (UVP), overcurrent protection (OCP), short-circuit protection (SCP) and/or overtemperature protection (OTP). A one-time programmable ROM is provided for main firmware, and a multi-time programmable ROM is provided for user-configuration data. The AP43781 is available in the compact W-QFN4040-24 (Type A1) package. The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries. All other trademarks are the property of their respective owners. © 2023 Copyright Diodes Incorporated. All Rights Reserved. Applications ■ Monitors with USB Type-C ports ■ Projectors with USB Type-C ports ■ TV power boards with USB Type-C ports

USB Type-C-LINK Monitor (CLM) Evaluation Board (EVB) System Configuration Product Portfolio Part Number Hardwired) Facing Port) Ordering Information Compliance Orderable Part Number (Only Automotive Supports PPAP) Moisture Sensitivity