Semiconductor integrated circuit for detecting leakage current and earth leakage circuit breaker having the same

A semiconductor integrated circuit for detecting leakage current configured to determine whether an electric leakage occurs in an electric line based on an induced voltage input from a leakage current detection unit installed in the electric line, the semiconductor integrated circuit for detecting leakage current comprising:

• a signal amplification unit configured to amplify the induced voltage;
• an interruption determination unit configured to compare an output voltage output from the signal amplification unit with a preset reference voltage for determining whether to cut off an electrical power, and output an interruption signal for interrupting a power supply to the electric line when the output voltage is the reference voltage or more;
• and
• a flare current stabilization circuit for signal amplification unit connected to the signal amplification unit to stabilize a flare current in the signal amplification unit, thus to reduce a variation in a sensitivity current;
• wherein the flare current stabilization circuit for signal amplification unit circuit comprises,
• a pair of current mirror circuits including a pair of transistors, respectively,
• base current supplies configured to supply the same amount of base current as each other to the pair of transistors included in each of the pair of current mirror circuits, and
• current adjusters connected to the respective transistors included in the pair of current mirror circuits to adjust an amount of current flowing through each of the transistors.