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ADP3000 Datasheet

Part NameADP3000(1997) ADI
Analog Devices ADI
DescriptionMicropower Step-Up/Step-Down Fixed 3.3 V, 5 V, 12 V, Adjustable High Frequency Switching Regulator
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GENERAL DESCRIPTION
The ADP3000 is a versatile step-up/step-down switching regulator that operates from an input supply voltage of 2 V to 12 V in step-up mode and up to 30 V in step-down mode. The ADP3000 operates in Pulse Frequency Mode (PFM) and consumes only 500 µA, making it highly suitable for applications that require low quiescent current.
The ADP3000 can deliver an output current of 100 mA at 3 V from a 5 V input in step-down configuration and 180 mA at 3.3 V from a 2 V input in step-up configuration.
The auxiliary gain amplifier can be used as a low battery detector, linear regulator undervoltage lockout or error amplifier.
The ADP3000 operates at 400 kHz switching frequency. This allows the use of small external components (inductors and capacitors), making the device very suitable for space constrained designs.

FEATURES
   Operates at Supply Voltages from 2 V to 30 V
   Works in Step-Up or Step-Down Mode
   Very Few External Components Required
   High Frequency Operation Up to 400 kHz
   Low Battery Detector on Chip
   User Adjustable Current Limit
   Fixed and Adjustable Output Voltage
   8-Pin DIP and SO-8 Package
   Small Inductors and Capacitors

APPLICATIONS
   Notebook, Palmtop Computers
   Cellular Telephones
   Hard Disk Drives
   Portable Instruments
   Pagers

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