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MC33063A: MC33063反向输出问题

Part Number: MC33063A

Hi 各位:

MC33063可以配置为反向输出,芯片额定输入为 3 V to 40 V,但是我看手册里在配置反向输出12V时,标注的输入范围为4.5V~6V,且输出电流为100mA,我一直对手册里的这种标注方法很疑惑,那常规额定输入3V~40V时,能不能输出-12V呢?为什么要特意标注4.5V~6V输入呢?如果能的话,12V输出最大能带多大负载呢,1.5A开关峰值电流和实际输出电流肯定不是一个概念,怎么估算最大输出电流呢?

谢谢