GENERAL DESCRIPTION
The ADP1148 is part of a family of synchronous step-down switching regulator controllers featuring automatic sleep mode to maintain high efficiencies at low output currents. These devices drive external complementary power MOSFETs at switching frequencies up to 250 kHz using a constant off-time current-mode architecture.

FEATURES
    Operation From 3.5 V to 18 V Input Voltage
    Ultrahigh Efficiency > 95%
    Low Shutdown Current
    Current Mode Operation for Excellent Line and Load Transient Response
    High Efficiency Maintained Over Wide Current Range
    Logic Controlled Micropower Shutdown
    Short Circuit Protection
    Very Low Dropout Operation
    Synchronous FET Switching for High Efficiency
    Adaptive Nonoverlap Gate Drives

APPLICATIONS
    Notebook and Palmtop Computers
    Portable Instruments
    Battery Operated Digital Devices
    Industrial Power Distribution
    Avionics Systems
    Telecom Power Supplies
    GPS Systems
    Cellular Telephones