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.