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The RT7882 is a USB Type-C Power Delivery (USBC PD) and PWM buck-boost controller with highly integrated functions and flexibility for USB PD provider applications. The IC has an embedded ARM Cortex<sup>TM</sup>-M0 MCU, which handles various functions of communication protocol, smart control of the PWM converter, firmware-based protections, and customized functions. The IC features hardware-based protections, such as inductor peak current limit, VBUS overvoltage protection (VBUS OVP), VIN undervoltage protection (VIN UVP), VIN overvoltage protection (VIN OVP), VO undervoltage protection (VO UVP), and VCONN current-limit protection, so that the protections have faster responses and can still function even when the MCU is not activated. The RT7882 can offer an excellent USB PD solution for a USB-PD Provider application with few external components and simple PCB layout.
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  • 支持 USB-C/PD 供电端应用
  • 支持的接口、协议
    ► USB PD3.1 规范，USB-C 电缆和连接器规范 2.1 版
    ► VCONN 输出能力大于 100mW
    ► 其他通过内含 MCU 和 DP/DM 运行的私家协议
  • Buck-Boost 控制器
    ► 输入电压范围：4.5V-30V
    ► 输出电压范围：3.3V-21V
    ► 峰值电流模式控制架构
    ► 内部实施恒流、恒压补偿
    ► 工作频率 200kHz-600kHz 可调
    ► 轻载可选 PSM 节能模式，亦可选择强制 CCM 模式
  • AnyPowerTM 特性的恒流、恒压输出
  • PD Safe® 特性
    ► 转换器输入电流限制阈值可调
    ► 快速响应输入过压、欠压检测结果
    ► VBUS 过压、欠压保护阈值可调
    ► 快速响应 CC1/2、D+/D- 过压检测结果
    ► 可调节的内、外过热保护
    ► CC1/2 输出电流限制保护
    ► CC1/2、D+/D- 可承受 25V电压
  • 对 VBUS 电缆压降进行补偿
  • 切换时钟同步以改善 EMI
  • 基于固件的功能
    ► VIN 降额和功率分配
  • 支持 Master 和 Slave 状态的 I2C 接口，LED 驱动器，GPIO
  • 内建 VBUS 快速放电通路
  • 内建驱动低成本 N-MOSFET 开关的电荷泵
  • 内建线性稳压器
  • 可通过 Slave I2C 接口或 CC1/2 进行固件在线更新
  • WQFN-48L 6x6 封装
  • 通过 USB PD3.1/PPS 认证（TID 8011）
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