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ADP3000 Datasheet

Part Name Description Manufacturer
ADP3000 Micropower Step-Up/Step-Down Fixed 3.3 V, 5 V, 12 V, Adjustable High Frequency Switching Regulator ADI
Analog Devices ADI
Other PDF  1997  
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ADP3000AR image

GENERAL DESCRIPTION
The ADP3000 is a versatile step-up/step-down switching regulator. It operates from an input supply voltage of 2 V to 12 V in step-up mode, and from 2 V to 30 V in step-down mode.
Operating in pulse frequency mode (PFM), the device consumes only 500 µA, making it ideal for applications requiring low quiescent current. It delivers an output current of 180 mA at 3.3 V from a 2 V input in step-up mode, and an output current of 100 mA at 3 V from a 5 V input in step-down mode.
The ADP3000 operates at 400 kHz switching frequency. This allows the use of small external components (inductors and capacitors), making it convenient for space-constrained designs.
The auxiliary gain amplifier can be used as a low battery detector, linear regulator, undervoltage lockout, or error amplifier.

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-lead PDIP, 8-lead SOIC, and 14-lead TSSOP packages
   Small inductors and capacitors

APPLICATIONS
   Notebook, palmtop computers
   Cellular telephones
   Hard disk drives
   Portable instruments
   Pagers

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