A multimode voltage regulator includes a low current pass device and a high current
pass device each adapted for connection between a power supply and a load; an error
amplifier responsive to a difference between a reference voltage and a function
of the voltage on the load to produce an error signal; and a low power driver responsive
in a low load power mode to an error signal for operating the low current pass
device to provide low power to the load and a high power driver responsive in a
high load power mode to an error signal for operating the high current pass device
to provide high power to the load for maintaining efficiency over high and low
power load operation.
