General Description
The MAX1725/MAX1726 are ultra-low supply current, low-dropout linear regulators intended for low-power applications that demand the longest possible battery life. Unlike inferior PNP-based designs, the MAX1725/MAX1726s’ PMOS pass elements maintain an ultra-low 2µA supply current throughout their entire operating range and in dropout. Despite their ultra-low power consumption, the MAX1725/MAX1726 have tight output accuracy (1.5%) and require just 1µF output capacitance to achieve good load-transient response.

Features
♦ 2µA Supply Current
♦ Reverse-Battery Protection
♦ +2.5V to +12V Input Voltage Range
♦ Fixed 1.8V, 2.5V, 3.3V, and 5V Output Voltages (MAX1726)
♦ Adjustable 1.5V to 5V Output Voltages (MAX1725)
♦ 20mA Guaranteed Output Current
♦ 1.5% Output Voltage Accuracy
♦ Small 1µF Output Capacitor
♦ Short-Circuit Protection
♦ Thermal Protection
♦ Tiny 5-Pin SOT23 Package

Applications
    Smoke Detectors
    Remote Transmitters
    Smart Battery Packs
    Industrial Control Systems
    Microcontroller Power
    Real-Time Clock Backup Power
    PDAs and Handy-Terminals
    Battery-Powered Alarms