1. Introduction 2. Features CX1901 / CX2901 is a USB charging port control protocol IC, can be working voltage:? 4.5V ~ 5.5V dual-port control function (CX2901): simultaneous independent charging device automatically recognizes the type of support, and by a corresponding charge handshake agreement with the device, and thus obtain maximum charging current, charging time savings based on the premise of protecting the charge two USB charging protocol detection equipment. ? Support multiple USB charging protocol, each charging protocol is automatically switched, including: Application: (Apple and other special)? Mobile power, portable charger, car charger Divider1 / Divider2 / Divider3 charging protocol D + / D- set 1.2V ? mode (Samsung dedicated) BC1.2 DCP and CTIS YD / T 1591-2009 charging protocol reliable power-on reset (POR) and low-voltage reset (LVR) Performance Package:?? SOT23-5, SOT23-6 Contact: Mr. Wu Tel: 18823722265 QQ: 471898120 Address: Longgang District, Shenzhen Li Lang Innovation Industrial Park, Building 1002 A4