L6928
High efficiency monolithic synchronous step-down regulator
Datasheet - production data
Applications
TSSOP8
VF...
L6928
High efficiency monolithic synchronous step-down regulator
Datasheet - production data
Applications
TSSOP8
VFQFPN8 (3x3x1.0 mm)
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
Battery-powered equipment Portable instruments Cellular phones PDAs and handheld terminals DSC GPS
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. Low consumption mode operation can be selected at light load conditions, allowing switching losses to be reduced. The L6928 is externally synchronized by a clock, which makes it useful in noise sensitive applications. Other features like Power Good, over
voltage prote...