Patent ID: 9268349
Filing Date: 2016-02-23
CPC Classification: G05F,G06F,H03K

Claim Text:
1. A circuit for optimizing an input voltage range of an IC chip, comprising: a pull-up unit, an input end thereof electrically connected with an input voltage, for pulling up a voltage level of an output end thereof based on the input voltage; a trigger unit, electrically connected between the pull-up unit and an enabling end of the IC chip, for comparing the voltage level output by the pull-up unit with a given threshold voltage, and outputting an enabling signal of a corresponding level to the enabling end of the IC chip based on the comparison result, so as to control the IC chip to start/stop; and a voltage stabilizing unit, a first input end of which is electrically connected to the output end of the pull-up unit, a second input end of which is electrically connected to the output end of the trigger unit, and an output end of which is electrically connected to a control end of the pull-up unit, for outputting a voltage of a corresponding level to the pull-up unit based on the voltages output by the pull-up unit and the trigger unit, so that the voltage level output by the pull-up unit is higher than or equal to the threshold voltage and thereby the IC chip starts operation, or so that the voltage level output by the pull-up unit is maintained to be higher than or equal to the threshold voltage and thereby the operation of the IC chip is not affected by variations of the input voltage; wherein: