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The RT7880T is a PWM Buck-Boost controller possessing the USB Type-C Port Controller (TCPC) Interface for USB Type-C (USB-C) PD applications. This PWM Buck-Boost controller is designed with a peak current-mode control scheme, which is able to deliver a maximal power of 100Watts with the programmable constant-voltage (CV) and constant-current (CC) output. Moreover, in order to support the enabling alternate mode, the RT7880T hereby integrates the Physical Layer of USB PD protocol. Seven (7) GPIO pins are provided for switching in the high-speed multiplixer or other customized functions. Furthermore, the Slave I<sup>2</sup>C interface, the TCPC command set and the vendor-defined command set (for power and GPIO controls) are also integrated in communication with the USB Type-C Port Manager (TCPM). <br /><br />The IC features full protections including the inductor peak current limit, the VBUS over-voltage protection (VBUS OVP), the VO under-voltage protection (VO UVP), and the VCONN current limit protection so as to provides an entire protection with the RT7880T inside. Hence, the RT7880T can offer an excellent USB PD solution for a USB PD application with less external components and simple PCB layout.<p>&nbsp;</p>
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  • 支持 USB-C/PD 应用之供电端、用电端和双重角色应用
  • 内建 USB PD 协议物理层和 CC 配置通道的处理机制
    ►符合 USB PD3.0 规范、USB-C 型电缆和连接器规范 1.2 版和 USB TCPC 接口规范 1.0 版之 2.0 修订版
    ►支持替换模式和 VCONN 输出
  • 集成 Buck-Boost 控制器
    ►输入电压范围:4V~36V
    ►峰值电流模式控制架构
    ►工作频率可调范围:200kHz~600kHz
    ►轻载可选脉冲跨越模式和强制电流连续模式
  • AnyPower™ 技术,可调恒压(15.6mV 或 23.4mV 级距)、恒流(9 位分辨率)输出设定
  • PDsafe® 技术
    ►转换器输入电流限制可调
    ►可程控 VBUS 过压保护阈值和 VO 欠压保护阈值
    ►外围过热保护阈值可调
    ►VCONN1/2 输出电流限制
  • VBUS 缆线压降补偿
  • 主从 I2C 接口
  • GPIO 可用于切换开关控制和用户自定义功能
  • 内建输出放电通道支持 VBUS 快速放电
  • 内建电荷泵支持使用低成本 N-MOSFET 开关
  • WQFN-40L 5x5 封装
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桌面电脑、液晶显示器和电视机 充电站、便携式硬盘 USB 接口的移动电源
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