A method and apparatus for regulating photocurrents is described. A
photocurrent regulator may include a transistor having an associated
cross-sectional area. The photocurrent regulator is coupled between an
integrated circuit and a voltage source. When a dose rate event occurs
within the integrated circuit, the photocurrent regulator, via the
cross-sectional area, regulates a recombination path to the voltage
source. Consequently, photocurrents within the integrated circuit are
regulated, preventing permanent damage within the integrated circuit.