ACT8892

ACT8892 Product Brief, 05-Dec-12 Advanced Power Management Unit FEATURES Three Step-Down DC/DC Converters Four Low-Dropout Linear Regulators I2CTM Serial Interface Advanced Enable/Disable Sequencing Controller Minimal External Components Tiny 4×4mm TQFN44-32 Package − 0.75mm Package Height − Pb-Free and RoHS Compliant GENERAL DESCRIPTION The ACT8892 is a complete, cost effective, highlyefficient ActivePMUTM power management solution that is ideal for a wide range of high performance portable handheld applications such as tablet or pad devices. 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 1150mA of output current, while the third supports up to 1300mA. All four low-dropout linear regulators are highperformance, low-noise, regulators that supply up to 320mA. The ACT8892 is available in a compact, Pb-Free and RoHS-compliant TQFN44-32 package. TYPICAL APPLICATION DIAGRAM Battery REG1 Step-Down DC/DC nPBIN PWRHLD PWREN VSEL nPBSTAT SCL SDA nIRQ nRSTO REG2 Step-Down DC/DC System Control REG3 Step-Down DC/DC REG4 LDO REG5 LDO REG6 LDO VSYS OUT1 0.6V to 3.9V Up to 1150mA OUT2 0.6V to 3.9V Up to 1150mA OUT3 0.6V to 3.9V Up to 1300mA OUT4 0.6V to 3.9V Up to 320mA OUT5 0.6V to 3.9V Up to 320mA OUT6 0.6V...