LP5551 Datasheet - National Semiconductor

LP5551 Compliant Energy Management Unit

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 www.DataSheet4U.com switching regulators for supplying variable voltag.

LP5551 Features

* 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. Adaptive Voltage Scaling

* Supports high-efficiency PowerWise Technology

LP5551_NationalSemiconductor.pdf