LP5553

LP5553 - PowerWise® AVS Energy Management Unit with SPMI www.DataSheet4U.com March 5, 2009 LP5553 PowerWise® AVS Energy Management Unit with SPMI General 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 stepdown DC/DC converters for supplying variable voltages to a SoC. The device also incorporates 5 programmable lowdropout, 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 PowerWise® AVS technology compatible 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 look-up tables. Features ■ 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 Vari...