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