The converter’s main benefits are its high efficiency, typically 85%, and the small footprint of the complete power-conversion circuit. Thanks to its high 6MHz switching frequency, the ST1S15 can operate with small supporting components: an inductor with a nominal value of 470nH, and an output capacitor of just 4.7μF. At the same time, the ST1S15 produces a very fast and accurate response to load and line transients.
The converter can operate in Pulse Frequency Modulation mode, for the highest efficiency under light-load conditions, or PWM mode for tight regulation and the best dynamic performance.
- 45μA quiescent current
- -1.5% typical regulation
- 10mV output-voltage ripple in PWM mode
- Short-circuit protection
- Thermal protection
- Power supplies for DSPs and multimedia processor cores
- Mobile phones