ADP3182

www.DataSheet4U.com Adjustable Output 1-/2-/3-Phase Synchronous Buck Controller ADP3182 GENERAL DESCRIPTION The ADP3182 is a highly efficient multiphase, synchronous, buck-switching regulator controller optimized for converting a 12 V main supply into a high current, low voltage supply for use in point-of-load (POL) applications. It uses a multimode PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VR size and efficiency. The phase relationship of the output signals can be programmed to provide 1-, 2-, or 3-phase operation, allowing for the construction of up to three complementary buckswitching stages. The ADP3182 also provides accurate and reliable short-circuit protection and adjustable current limiting. ADP3182 is specified over the commercial temperature range of 0°C to +85°C and is available in a 20-lead QSOP package. FEATURES Selectable 1-, 2-, or 3-phase operation at up to 1 MHz per phase ±2% worst-case differential sensing error over temperature Externally adjustable 0.8 V to >5 V output from a 12 V supply Logic-level PWM outputs for interface to external high power drivers Active current balancing between all output phases Built-in power good/crowbar functions Programmable short-circuit protection with programmable latch-off delay APPLICATIONS Auxiliary supplies DDR memory supplies Point-of-load modules FUNCTIONAL BLOCK DIAGRAM VCC 1 RAMPADJ RT 9 8 EN 6 GND 14 UVLO SHUTDOWN & BIAS OSCILLATOR SET...