LP5553

LP5553 www.ti.com SNVS544E – FEBRUARY 2009 – REVISED MARCH 2013 LP5553 PowerWise® AVS Energy Management Unit with SPMI Check for Samples: LP5553 FEATURES 1 2 SPMI Bus for System-Level Power Management High-Efficiency PowerWise® 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 mA – 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) compliant 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 SoC. 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 controll...