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LP5550

Texas Instruments
Part Number LP5550
Manufacturer Texas Instruments
Description Energy Management
Published Aug 23, 2019
Detailed Description LP5550 www.ti.com SNVS378G – OCTOBER 2005 – REVISED APRIL 2013 LP5550 PowerWise™ Technology Compliant Energy Manageme...
Datasheet PDF File LP5550 PDF File

LP5550
LP5550

Overview
LP5550 www.
ti.
com SNVS378G – OCTOBER 2005 – REVISED APRIL 2013 LP5550 PowerWise™ Technology Compliant Energy Management Unit Check for Samples: LP5550 FEATURES 1 •2 Supports High-Efficiency PowerWise Technology Adaptive Voltage Scaling • PWI Open Standard Interface for System Power Management • Digitally Controlled Intelligent Voltage Scaling • 1 MHz PWM Switching Frequency • Auto or PWI Controlled PFM Mode Transition • Internal Soft Start/Startup Sequencing • 3 Programmable LDOs for I/O, PLL, and Memory Retention Supply Generation • Power OK Output APPLICATIONS • GSM/GPRS/EDGE & UMTS Cellular Handsets • Hand-Held Radios • PDAs • Battery Powered Devices • Portable Instruments DESCRIPTION The LP5550 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 LP5550 contains an advanced, digitally controlled switching regulator for supplying variable voltage to processor core and memory.
The device also incorporates 3 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 LP5550 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.
System Diagram +- VBAT ENABLE RESETN LP5550 LDO3 SW Slave Power Controller (SPC) LDO1 LDO2 VO3 SW FB SCLK SPWI PWROK VO1 VO2 AVS PWI SoC Embedded Memory Processor Core AVS/DVS domain Hardware Performance Monitor (HPM) Advanced Power Controller (APC) PLL I/O Bus Figure 1.
System Diagram 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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