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).