●The LP5551 is a PWI 1.0 compliant Energy Management System for reducing power consumption of stand-alone mobile phone processors such as base-band or applications processors.
●The LP5551 contains two advanced, digitally controlled switching regulators for supplying variable voltage to processor core and memory. Two regulators provide P- and N- well biasing for threshold scaling applications. The device also integrates 4 programmable LDO-regulators for powering I/O, PLLs and maintaining memory retention in shutdown-mode.
●The device is controlled via the PWI open-standard interface. The LP5551 operates cooperatively with PowerWise™ technology compatible processors to optimize supply voltages adaptively over process and temperature variations or dynamically using frequency/voltage pre-characterized look-up tables and provides P- and N-well biasing for threshold scaling.
● 2 300 mA Buck Regulators Operate 180 Degrees out of Phase for Reduced EMI
● 1 MHz PWM Switching Frequency
● 4 Programmable LDOs Ideal for I/O (Two of These), PLL, and Memory Retention Supply Generation
● Supports High-Efficiency PowerWise Technology Adaptive Voltage Scaling
● PWI Open Standard Interface for System Power Management
● Digitally Controlled Intelligent Voltage Scaling
● Auto or PWI Controlled PFM Mode Transition
● Internal Soft Start/Startup Sequencing
● Adjustable P- and N- Well Bias Supply for Threshold Scaling
● Power OK Output
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