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The RT8230A/B/C/D/E 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. The 5V linear regulator supplies power to the PWM drivers. The RT8230A/B/C/D/E includes 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. To eliminate noise in audio applications, an ultrasonic mode is included, which maintains the switching frequency above 25kHz. Moreover, the diode-emulation mode maximizes efficiency for light load applications. The RT8230A/B/C/D/E is available in the WQFN-20L 3x3 package.</p>
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  • 最高责任周期达 96%
  • CCRCOT 控制技术，具备 100ns 步阶负载响应能力
  • 5V~25% 输入电压范围
  • 两路可调输出电压范围：
    ►CH1：2V~5.5V
    ►CH2：2V~4V
  • 3.3V/5V LDO 输出能力：100mA
  • 3.3V LDO 输出电压精度 1%
  • 经 TON 设定频率可调
  • 4700ppm/ °C RDS(ON) 电流检测
  • 可调电流限制与使能控制使用同一端子
  • 内建软启动和阮芳殿功能
  • 热关机保护
  • 符合 RoHS 规范，不含卤素
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笔记本电脑 2~4芯锂离子电池供电设备
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