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Original question:
为何LM1117-1.8没有宽温-40-125°C的?
使用lm1117-1.8芯片输出稳定的1.8V,在datasheet中看到下图所示
请问此时电容的大小是多少啊?然后ADJ引脚直接接地的话,是否需要在OUT引脚和ADJ引脚之间接一个R1电阻来稳压?也即R1电阻一端连接到OUT另一端连接到ADJ(即GND引脚),如果需要的话,这个R1大小是多少?
HI
输入电容按照datasheet推荐10uF以上就可以的, 上面是个恒流设计,输出电流是Vref/R1.