STEVAL-ISA091V1 is a step-down switching power supply based on the L7980 switching regulator. It features a 2A DC output current, a 4.5V to 28V input voltage range, an adjustable output voltage from 0.6V, a programmable switching frequency up to 1MHz, internal soft-start and enable functions, low dropout operation with 100% duty cycle, and overcurrent and thermal protection.