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The RT6576F is a dual-channel step-down controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current and 3.3V linear regulator provides 1% accuracy under 35mA. The RT6576F has an oscillator output to drive the external charge pump application. Other features include on-board power-up sequencing, a power-good output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown. <p align="justify">A constant current ripple PWM control scheme operates without sense resistors and provides 100ns response to load transient. For maximizing power efficiency, the RT6576F automatically switches to the diode-emulation mode in light load applications. To eliminate noise in audio applications, an audio-skipping mode is included, which maintains the switching frequency above 25kHz. The RT6576F is available in the WQFN-20L 3x3 package.</p>
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  • 支持超级本联机待机模式
  • CCRCOT控制架构，具有100ns负载阶跃响应能力
  • 最大占空比 > 98%
  • 输入电压范围：5V~25V
  • 输出电压可调范围
    ►CH1：2V~5.5V
    ►CH2：2V~4V
  • 5V/3.3V线性稳压器负载能力为100mA
  • 3.3V线性稳压器输出精度为1%
  • 振荡器输出可用于电荷泵电路驱动
  • 支持音频避开模式
  • 内部频率设定：
    ►300kHz/355kHz (CH1/CH2)
  • 内置软起动和软放电功能
  • 4700ppm/°C RDS(ON) 电流检测
  • 各通道独立的使能控制
  • 内建OVP/UVP/OCP/OTP
  • 不锁定的欠压锁定保护
  • Power Good指示
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笔记本电脑和类笔记本电脑 系统电源 2~4节锂离子电池供电的设备
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