Description

The device is a DC-DC monolithic regulator specifically designed to provide high efficiency. The L6928 supply voltage can be as low as 2 V to be used in single Li-Ion cell supplied applications. Output voltage can be selected by an external divider down to 0.6 V. Duty cycle can saturate 100 allowing low-dropout operation. The device is based on a 1.4 MHz fixed frequency, current mode architecture.

Features

? 2 V to 5.5 V battery input range

? High efficiency: up to 95

? Internal synchronous switch

? No external Schottky diode required

? Extremely low quiescent current

? 1 μA max. shutdown supply current

? 800 mA max. output current

? Adjustable output voltage from 0.6 V

? Low-dropout operation: up to 100 duty cycle

? Selectable low noise/low consumption mode at light load

? Power Good signal

? ± 1 output voltage accuracy

? Current mode control

? 1.4 MHz switching frequency

? Externally synchronized from 1 MHz to 2 MHz

? OVP

? Short-circuit protection

Applications

? Battery-powered equipment

? Portable instruments

? Cellular phones

? PDAs and handheld terminals

? DSC

? GPS