ADP1109
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Operates at Supply Voltages 2 V to 12 V
Fixed 5 V, 12 V and Adjustable Output
SENSE
Minimum External ponents Required
Ground Current 320 A 120 k Hz Oscillator Frequency
R2 250kΩ
Logic Shutdown
PARATOR
8-Pin DIP and SO Package
APPLICATIONS Cellular Telephones Single-Cell to 5 V Converters Laptop and Palmtop puters Pagers
OCameras Battery Backup Supplies B Portable Instruments Laser Diode Drivers S Hand-Held Inventory puters OLINARY GENERAL DESCRIPTION
LIM AE The ADP1109 is a versatile step-up switching regulator. The L device requires only minimal external ponents to operate as E IC T a plete switching regulator. PR HN E The ADP1109-5 can deliver 100 m A at 5 V from a 3 V input, and ADP1109-12 can deliver 60 m A at 12 V from a 5 V input. C The device also features a logic controlled shutdown capability TE TA that when a logic low is applied it will shut the oscillator down. The 120 k Hz operating frequency allows for the use of...
