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RT5744 系列是一款降压转换器，可在 2.5V 至 5.5V 输入电压范围内提供数字可编程输出电压。输出电压可通过最高支持 3.4MHz 的 I²C 接口进行设定。采用专有同步整流架构，RT5744 系列分别可提供最高 4A 与 6A 的连续输出电流，且在低至 10mA 负载电流时仍能保持高效率。稳压器以标称 2.4MHz 固定频率工作，可减少外部元件数量。增加额外输出电容可改善负载瞬态期间的稳压性能，而不会影响系统稳定性。在中轻负载条件下，器件采用脉冲频率调制（PFM）模式以提升节能效率，室温下典型静态电流仅 45μA。即使在极低静态电流下，仍能在大幅负载变化时提供优异的瞬态响应。在重负载条件下，系统会自动切换至 2.4MHz 固定频率控制模式。在关断模式下，电源电流典型值仅 0.1μA，有助于降低功耗。如需固定频率运行，也可关闭 PFM 模式。RT5744 系列采用 WL-CSP-14B 1.31×2.02 (BSC) 封装。建议结温范围为 -40°C 至 125°C。各料号特性请参阅订购信息。
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