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. The SC192 has a flexible clocking scheme. It can be synchronized to an external oscillator, fixed to the internal oscillator, or allowed to modulate the frequency during 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 0.1A.