Hi,
I didn´t read datasheet, but I´m ver sure the IC has a built in current limiter.
The limiter is to safe the switch from damage and to prevent the coil from saturating.
Since this is switch current, the output current depends on output voltage.
It says 50mA, because the circuit ensures to deliver 50mA. But it is not a true output current limit.
Klaus
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Hi again,
A "shunt" is just another word for a resistor in series with the load. It´s for current measurement.
Klaus