MB3817 Datasheet, PDF (12/29 Pages) Fujitsu Component Limited. – Switching Regulator Controller

MB3817
(2) Low input voltage error prevention circuit (UVLO)
Power-on surges and momentary drops in power supply voltage can cause errors in control IC operation, which
can destroy or damage systems. The low input voltage error protection circuit compares the supply voltage to
the internal reference voltage, and sets the OUT pin (pin 10) to “H” level in the event of a drop in supply voltage.
Operation is restored when the power supply voltage returns above the threshold voltage of the low input
voltage error prevention circuit.
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