LP5553 Datasheet | Texas Instruments

.ti. SNVS544E - FEBRUARY 2009 - REVISED MARCH 2013 LP5553 Power Wise® AVS Energy Management Unit with SPMI Check for Samples: LP5553 Features - 2 SPMI Bus for System-Level Power Management - High-Efficiency Power Wise® Technology Adaptive Voltage Scaling for Intelligent Energy Management in AVS and DVS Environments - Two Digitally Programmable 3.6 MHz Buck Regulators to Power Dual Voltage Domains - Five Programmable LDOs for System Functions Such as: - PLL/Clock Generation - I/O - Memory Retention - Internal Soft Start - Variable Regulator Power Up Sequencing. KEY SPECIFICATIONS - Input Voltage Range: 2.7 to 4.8V - Output Voltage Range: ±2% (typical) - Programmable DC/DC Buck Converters - Output Current per DC/DC Converter: 800 m A - Efficiency: Up to 88% - Digitally Programmable: from 0.6 to 1.235V - Programmable LDOs - Five digitally programmable LDOs DESCRIPTION The LP5553 is a System Power Management Interface (SPMI) pliant Energy Management Unit for reducing power consumption of low power hand held applications such as dual-core processors and DSPs. The LP5553 contains 2 advanced, digitally controlled step-down DC/DC converters for supplying variable voltages to a So C. The device also incorporates 5 programmable low-dropout, low noise linear regulators for powering I/O, peripheral logic blocks, auxiliary system functions, and maintaining memory retention (dual-domain) in shutdown-mode. The LP5553 implements 2 Non-Request Capable Slaves that are controlled via the SPMI. The LP5553 operates cooperatively with Power Wise® AVS technology patible processors to optimize supply voltages adaptively (AVS - Adaptive Voltage Scaling) over process and temperature variations. It also supports dynamic voltage scaling (DVS) using frequency/voltage pairs from pre-characterized lookup...