500mA LDO with 3.3V fixed or adjustable output
The MAX1792EUA33-TG068 is a 500mA low-dropout linear regulator from Analog Devices, with a fixed 3.3V output and an adjustable range from 1.25V up to 5V via the feedback pin. Maximum dropout is 250mV at the full 500mA load, so the input rail needs to stay at least 250mV above the output voltage to maintain regulation across the load range.
Dropout, quiescent current, and protection set the operating margin
Quiescent current is 250µA typical, which matters for battery-powered or always-on rails where the regulator's own draw competes with the load's sleep current. Built-in protection covers over-current, over-temperature, and short-circuit events — the regulator shuts down before the pass device or load sees damage, then auto-recovers when the fault clears. Control inputs include Enable and Reset, letting a system supervisor hold the output off until the input rail is stable or assert a reset signal to the downstream load.