AMS1117 3.3V voltage regulator modules are rated at 800mA maximum output current. However, it is a linear regulator, not a switching converter. The module will dissipate a lot of heat if it is asked to handle a higher current with a large voltage drop (difference from Input Voltage to Output Voltage).
This should be considered in your circuit design. The module will not be able to achieve the full 800mA output when the input to output voltage differential is greater than a couple of volts.
Depending on your input voltage, the maximum current available for output will be impacted. The larger the input voltage, the lower the current capabilities.
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