ACT8894

® ACT8894 Product Brief, 29-Nov-10 Advanced PMU for Samsung S3C2416/S3C2450 FEATURES • Optimized for Samsung S3C2416/S3C2450 Processors GENERAL DESCRIPTION The ACT8894 is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Samsung S3C2416/S3C2450 processors. This device features three step-down DC/DC converters and four low-noise, low-dropout linear regulators. The three DC/DC converters utilize a highefficiency, fixed-frequency (2MHz), current-mode PWM control architecture that requires a minimum number of external components. Two DC/DCs are capable of supplying up to 900mA of output current, while the third supports up to 700mA. All four lowdropout linear regulators are high-performance, low-noise, regulators that supply up to 150mA, 150mA, 250mA, and 250mA, respectively. The ACT8894 is available in a compact, Pb-Free and RoHS-compliant TQFN55-32 package. • • • • • • Three Step-Down DC/DC Converters Four Low-Dropout Linear Regulators I2CTM Serial Interface Advanced Enable/Disable Sequencing Controller Minimal External Components Tiny 5×5mm TQFN55-32 Package − 0.75mm Package Height − Pb-Free and RoHS Compliant APPLICATIONS • • • • • Personal Navigation Devices Portable Media Players Tablet Devices Smart Phones MIDs TYPICAL APPLICATION DIAGRAM Innovative PowerTM ActivePMUTM is trademark of Active-Semi. I2CTM is a trademark of NXP. -1- www.active-semi.com Copyright © 2010 Active-Semi, Inc. ® Product Brief, 29-Nov-10 ACT8894 900mA PRODUCT OPTIONS Block REG1 REG2 REG3 REG4 REG5 REG6 REG7 Function Step-Down DC/DC Step-Down DC/DC Step-Down DC/DC LDO LDO LDO LDO Output Voltage Adjustable, or 0.6V to 3.9V Capability 700mA 900mA 150mA 0.6V to 3.9V 150mA 250mA 250mA FUNCTIONAL BLOCK DIAGRAM VP1 To Battery ACT8894 VP2 nPBIN PUSH BUTTON OUT1 SW1 OUT1 OUT1 GP1 VP2 nRSTO SW2 To Battery OUT2 OUT1 nPBSTAT OUT2 GP2 VP3 To Battery nIRQ SW3 OUT3 OUT3 GP3 OUT1 System Control PWRHLD INL45 PWREN VSEL SCL SDA VDDREF To Battery REG6 LDO Reference Serial Interface To Battery REG4 LDO REG5 LDO OUT4 OUT4 OUT5 OUT5 INL67 To Battery OUT6 OUT6 REFBP GA EP REG7 LDO OUT7 OUT7 Innovative PowerTM -2- www.active-semi.com Copyright © 2010 Active-Semi, Inc.