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