LP5552

www.DataSheet4U.com LP5552 PWI 2.0 and PowerWise™ Technology Compliant Energy Management Unit ADVANCE INFORMATION September 2006 LP5552 PWI 2.0 and PowerWise™ Technology Compliant Energy Management Unit General Description The LP5552 is a PWI 2.0 compliant Energy Management System for reducing power consumption of stand-alone mobile phone processors such as base-band or applications processors. The LP5552 contains two advanced, digitally controlled switching regulators for supplying variable voltage to processor core and memory. The device also incorporates 5 programmable LDO regulators for powering I/O, peripheral logic blocks, maintaining memory retention (dual-domains) in shutdown mode, and auxillary functions. The device is controlled via the PWI 2.0 open-standard interface. The LP5552 operates cooperatively with PowerWise technology compatible processors to optimize supply voltages adaptively over process and temperature variations (adaptive voltage scaling) or dynamically using frequency/ voltage pre-characterized look-up tables (dynamic voltage scaling). Features n Two 800 mA buck regulators operate 180 degrees out of phase for reduced EMI n 3.6 MHz PWM switching frequency n Five programmable LDOs ideal for I/O , PLL, and memory retention supply generation. n Supports high-efficiency PowerWise Technology Adaptive Voltage Scaling n PWI 2.0 open standard interface for system power management n Digitally controlled intelligent voltage scaling n Auto or PWI controlled ...