DESCRIPTION

The device is dc-dc monolithic regulator specifically designed to provide extremely high efficiency. The device has on UVLO set at 2.7V cause it is part icurarly thought for single Li-ion cell applications.

Output voltage can be selected by an external divider down to 0.6V. Duty Cycle can saturate to 100 allowing low drop-out operation.

FEATURES

■ 2.7V TO 5.5V BATTERY INPUT RANGE

■ HIGH EFFICIENCY: UP TO 95

■ INTERNAL SYNCHRONOUS SWITCH

■ NO EXTERNAL SCHOTTKY REQUIRED

■ EXTREMELY LOW QUIESCENT CURRENT

■ 800mA MAX OUTPUT CURRENT

■ ADJUSTABLE OUTPUT VOLTAGE FROM 0.6V

■ LOW DROP-OUT OPERATION: UP TO 100 DUTY CYCLE

■ SELECTABLE LOW NOISE/LOW CONSUMPTION MODE AT LIGHT LOAD

■ LOW BATTERY INPUT

■ LOW BATTERY OUTPUT

■ ±1 OUTPUT VOLTAGE ACCURACY

■ CURRENT-MODE CONTROL

■ 600kHz SWITCHING FREQUENCY

■ EXTERNALLY SYNCHRONIZABLE FROM 500kHz TO 1.4MHz

■ OVP

■ SHORT CIRCUIT PROTECTION