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TPS65381输出电流的疑问

Other Parts Discussed in Thread: TPS65381-Q1

1、上图是从《TPS65381-Q1 Multi-Rail Power Supply for Microcontrollers in Safety Applications》手册中截取的。

请问,图中第一个红线框中的最大值300mA和第二个红线框中的描述是什么关系?limit指的是过流保护的阈值范围吗?

2、有没有其它类似的,3.3V通道输出电流大于300mA的,与TMS570LS系列单片机配套的安全关键型电源管理芯片?