Under voltage lock out circuit and method

Details Under voltage lock out circuit and method Under voltage lock out circuit and method

2007-05-07

2009-02-03

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Input level responsive

C323S276000, C323S281000, C323S901000, C361S092000

Reexamination Certificate

active

07486064

ABSTRACT:
A voltage comparison unit compares a battery voltage with a predetermined threshold voltage, and outputs a comparison signal. A sequence circuit receives the comparison signal and a start-up signal instructing start-up of equipment mounted with a UVLO circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal in a state the battery voltage is higher than the threshold voltage. A voltage control unit switches the threshold voltage based on the comparison signal and the start-up signal.

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