Bandgap reference circuits capable operating in low voltage environments.
In the bandgap reference circuit, a current generation circuit generates
an output current obtained by combining a first current, a second current
and a third current. The first current is converted from a first voltage
and a first forward voltage of a first constant voltage generation
element. The second current and the third current are both converted from
a voltage difference between the first forward voltage and a second
forward voltage of the second constant voltage generation element. A
current-to-voltage generator converts the output current to an output
voltage.
