GENERAL DESCRIPTION
The ADM663/ADM666 are precision voltage regulators featuring a maximum quiescent current of 12 µA. They can be used to give a fixed +5 V output with no additional external components or can be adjusted from 1.3 V to 16 V using two external resistors. Fixed or adjustable operation is automatically selected via the VSET input. The low quiescent current makes these devices especially suitable for battery powered systems. The input voltage range is 2 V to 16.5 V and an output current up to 40 mA is provided. The ADM663 can directly drive an external pass transistor for currents in excess of 40 mA. Additional features include current limiting and low power shutdown. Thermal shutdown circuitry is also included for additional safety.

FEATURES
   5 V Fixed or +1.3 V to +16 V Adjustable
   Low Power CMOS: 12 µA max Quiescent Current
   40 mA Output Current
   Current Limiting
   Pin Compatible with MAX663/666
   +2 V to +16.5 V Operating Range
   Low Battery Detector ADM666
   No Overshoot on Power-Up

APPLICATIONS
   Handheld Instruments
   LCD Display Systems
   Pagers
   Remote Data Acquisition