Si9167
DESCRIPTION
The Si9167 provides a fully integrated synchronous buck converter solution for the latest 2-cell Lithium Ion battery cellular phones. Capable of delivering up to 600 m A of output current, the Si9167 provides ample power for various Baseband circuits as well as for some PAs.
The Si9167 bines the 2 MHz switching frequency with fully integrated high-frequency MOSFETs to deliver the smallest and most efficient converter available today. The 2 MHz switching frequency reduces the inductor height to a new level of less than 2 mm and minimizes the output capacitance requirement to less than 10 µF, with only 10 m V peakto-peak output ripple. bined with its integrated low gate charge high-frequency MOSFETs and internal synchronous rectifier, the Si9167 delivers efficiency up to 95 %. The programmable pulseskipping mode maintains high efficiency even during the standby mode to increase overall battery life and talk time. In order to extract the last ounce of power from battery, Si9167...
