GENERAL DESCRIPTION

The ADP1109 is a versatile step-up switching regulator. The device requires only minimal external components to operate as a complete switching regulator.

FEATURES

Operates at Supply Voltages 2 V to 12 V

Fixed 3.3 V, 5 V, 12 V and Adjustable Output

Minimum External Components Required

Ground Current: 320 mA

Oscillator Frequency: 120 kHz

Logic Shutdown

8-Lead DIP and SO-8 Packages

APPLICATIONS

Cellular Telephones

Single-Cell to 5 V Converters

Laptop and Palmtop Computers

Pagers

Cameras

Battery Backup Supplies

Portable Instruments

Laser Diode Drivers

Hand-Held Inventory Computers