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Single-Phase, Synchronous Buck Controller
ON Semiconductor Corp
Description
Product Description The ADP3209 is a highly efficient, single-phase, synchronous buck switching regulator controller. With its integrated drivers, the ADP3209 is optimized for converting the notebook battery voltage to render the supply voltage required by high performance Intel chipsets. An internal 5-bit DAC is used to read a VID code directly from the chipset and to set the GMCH core voltage to a value within the range of 0.4 V to 1.25 V.
Features
Fully compatible with the Intel GMCH chipset voltage regulator specifications Integrated MOSFET drivers ±8 mV worst-case differentially sensed core voltage error over temperature Automatic power-saving modes maximize efficiency during light load operation Soft transient control reduces inrush current and audio noise Independent current limit and load line setting inputs for additional design flexibility Built-in power-good masking supportsvoltage identification (VID) on-the-fly transients 5-bit, digitally programmable DAC with 0.4 V to 1.25 V output Short-circuit protection with programmable latch-off delay Output power or current monitor options
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