Enable input for the switching section 1.
– If EN1 < 0.8 V the switching section OUT1 is turned off and all faults are
cleared.
– If EN1 > 2.4 V the switching section OUT1 is turned on.
– If EN1 is connected to VREF2, the switching section OUT1 turns on after
the switching section OUT2 reaches regulation.
есть еще вопросы?
будет забавно, если у вас батарейка RTC дохлая)