Tool/software:
Dears,
The customer encountered some problems when using LM1117IMPX-3.3.
3.3V is connected to a 500Ω load, +5V is powered by an external power supply, and the external input current is 80mA. Remove 1117, and the external power supply supplies 3.3V, and the external input current is 7mA.
1. Does this mean that the 1117 ground pin leaks 73mA?
2. Does this mean that the output capacitor only needs 1uF? Will a large capacitor cause the device to work unstable?
Thanks,
Arabella
