Anti -interference low -voltage detection chip

The utility model belongs to the technical field of the integrated circuit technique and specifically relates to an anti -interference low -voltage detection chip. It is connected with recovery voltage and sets for the circuit including resistive voltage divider circuit, logical combination circuit, capacitor charging and discharging circuit and schmidt shaping circuit that the order is connected between resistive voltage divider circuit and the schmidt shaping circuit, logical combination circuit's input still is connected with circuit for generating a reference voltage. The utility model discloses a schmidt shaping circuit who sets up can make the wave form of whole chip output more stable, though utilize capacitor charging and discharging circuit to have certain time delay when whole chip moves, strengthened the interference immunity of chip, it is very little to make it receive external interference to make voltage detecting's result more accurate, set for recovery voltage that the circuit can greatly weaken and the relation between starting voltage and the resistive voltage divider circuit through the recovery voltage who sets up, strengthened input voltage's change nature, improve the detection precision, its circuit structure is simple, has very strong practical value and market spreading value.