Reference current circuit

The invention provides a reference current circuit which can reduce temperature dependency of reference current even though in the situation of using a resistor of a resistance provided with very low temperature dependency. The reference current circuit comprises: a reference voltage V receiving temperature compensation and a noninverting amplifier circuit 110 generating a voltage V on an output point; a current source circuit 120 consisted of a transistor Q1 which is connected to the output point via the resistor and a transistor Q2 which receives a voltage equal to a voltage V generated among terminals of Q1 and generating related circuit. The circuit 110 (i) comprises: a third transistor Q3. A voltage V generated among the terminals of the Q3 is provided with the same temperature property with V , and is structured to make V is the sum of (a) a temperature compensation voltage component based on the reference voltage V and (b) a voltage component equal to the voltage V .