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