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RT9553A 被设计用于过流保护和过压/欠压保护，它容许使用者在 ILIM 端进行过流阈值的设定，并将其和 CSP/CSN端子之间检测到的电压差进行比较。同时，使用者可通过 OVSET/UVSET 端子设定过压/欠压阈值，并将其和 CSP 端检测到的电压进行比较。RT9553A 的封装是 WDFN-10L 3x3。
共模输入电压最高可达 24V
VCC 工作电流：200μA
VCC 关机电流：10μA（在 S3/S4/S5 状态下）
可编程过流阈值
过流保护发生时经 PROCHOT 输出单脉冲
过压保护/过流保护发生时拉低 RESET 信号
过压保护/欠压保护有 8% 的恢复滞回
可编程过压保护/欠压保护去抖动时间
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