A current limit circuit is provided to secure the reliability of an electronic circuit and block a current by restricting the current supplied to a load of the electronic a certain range. A current limiting circuit is composed of a reference voltage generating unit(210), a differential amplifier, a first driver, a voltage regulating diode(ZD1), and a first resistor. The reference voltage generating unit receives an input voltage from a first node and produces a reference voltage(Vref). The differential amplifier compares the reference voltage and a voltage of a second node and amplifies a comparison result. A first driver is installed between the first node and the second node and is operated in response to the output voltage from the differential amplifier.
