DESCRIPTION
The AIC1555 is a low-noise pulse-width-modulated (PWM) DC-DC step-down converter. It powers logic circuits in PDAs and small wireless systems such as cellular phones, handy-terminals.

FEATURES
● 95% Efficiency or up
● 700mA Guaranteed Output Current.
● Adjustable Output Voltage from 0.75V to VIN of a range from +2.5V to 6.5V.
● Very Low Quiescent Current: 35µA (Typ.).
● Fixed- 500KHz or Adjustable Frequency Synchronous PWM Operation.
● Synchronizable external Switching Frequency up to 1MHz.
● Constant Over-current-protection mode.
● Accurate Reference: 0.75V (±2.5%).
● 100% Duty Cycle in Dropout.
● Low Profile 8-Pin MSOP Package.

APPLICATIONS
● PDAs.
● Digital Still Cameras.
● Handy-Terminals.
● Cellular Phones.
● CPU I/O Supplies.
● Cordless Phones.
● Notebook Chipset Supplies.
● Battery-Operated Devices (4 NiMH/ NiCd or 1 Li-ion Cells).