ADP3000

Micropower Step-Up/Step-Down Fixed 3.3 V, 5 V, 12 V, Adjustable High Frequency Switching Regulator ADP3000 00122-001 OBSOLETE 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 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 mod...