SC192

Synchronous Buck Converter with Integrated www.DataSheet4U.com Power Devices POWER MANAGEMENT Description The SC192 is a synchronous step-down converter with integrated power devices designed for battery operated systems. The internal power switches reduce system size and cost. In addition, an efficiency of 95% can be achieved for significant line and load ranges. The SC192 is designed for single-cell Li-Ion battery applications, but also performs well in fixed 3.3V or 5V input circuits. SC192 Features ‹ 2.7V to 7V Input Range ‹ Output Adjustable from 0.75V to Vin ‹ Fixed Frequency or PSAVE for Maximum Efficiency Over Wide Load Current Range 700mA Guaranteed Output Current No Schottky Diode Required 35μA Quiescent Current 100% Duty Cycle in Dropout 95% Efficiency Fast Transient Response Over Temperature Protection Space-saving Micro Lead-Frame Package MLPD-10 3x3 ‹ ‹ ‹ ‹ The SC192 has a flexible clocking scheme. It can be ‹ synchronized to an external oscillator, fixed to the inter- ‹ nal oscillator, or allowed to modulate the frequency dur- ‹ ing light loads (PSAVE) for maximum battery life, by the ‹ method called pulse frequency modulation (PFM). Shutdown places the switches in a high impedance state and turns off all control circuitry to achieve a typical quiescent current of 0.1μA. Applications ‹ ‹ ‹ ‹ ‹ Cell Phones Cordless Phones Notebook and Subnotebook Computers PDAs and Mobile Communicators 1 Li-Ion or 3 NiMH/NiCd Powered Devices Line and load regulation is to +...