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