ADP1109 - Analog Devices

ADP1109 DC-to-DC Converter

LIM AE The ADP1109 is a versatile step-up switching regulator. The L device requires only minimal external components to operate as E IC T a complete switching regulator. PR HN E The ADP1109-5 can deliver 100 mA at 5 V from a 3 V input, and ADP1109-12 can deliver 60 mA at 12 V from a 5 V input. C The device also features a logic controlled shutdown capabilit.

Features

FUNCTIONAL BLOCK DIAGRAM Operates at Supply Voltages 2 V to 12 V Fixed 5 V, 12 V and Adjustable Output VIN SENSE Minimum External Components Required Ground Current 320 ␮A 120 kHz Oscillator Frequency R2 250kΩ ADP1109 Logic Shutdown COMPARATOR SW 8-Pin DIP and SO Package APPLICATIONS Cellular Telephones Single-Cell to 5 V Converters Laptop and Palmtop Computers Pagers OCameras Battery Backup Supplies B Portable Instruments Laser Diode Drivers S Hand-Held Inventory Computers OLINARY GENERAL DESCRIPTION LIM AE The ADP1109 is a versatile step-up switching regulator. The L device requ.