L6928

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, overvoltage prote...