LP5551 Overview
The LP5551 is a PWI 1.0 pliant 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.
LP5551 Key Features
- 23 2 300 mA Buck Regulators Operate 180 Degrees out of Phase for Reduced EMI
- 1 MHz PWM Switching Frequency
- 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
