General Description
The MAX1615/MAX1616 are micropower, SOT23-5 linear regulators that supply always-on, keep-alive power to CMOS RAM and microcontrollers (µCs) in systems with high-voltage batteries. Key features include wide input voltage range, low dropout voltage, and low quiescent supply current.

Features
♦ 4V to 28V Input Range
♦ 8µA (max) Quiescent Supply Current
♦ <1µA Shutdown Supply Current
♦ 3.3V or 5V, Pin-Selectable Output (MAX1615)
   Adjustable 1.24V to 28V Output (MAX1616)
♦ 30mA Output Current
♦ ±2% Initial Output Accuracy
♦ Thermal-Overload Protection
♦ 5-Pin SOT23 Package
♦ Low Cost

Applications
   CMOS/RTC Backup Power
   Microcontroller Power
   Notebook Computers
   Smart-Battery Packs
   PDAs and Handy-Terminals
   Battery-Powered Systems