ACT8828(2009) Datasheet PDF - Active-Semi, Inc

GENERAL DESCRIPTION
The patent-pending ACT8828 is a complete, cost effective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of high performance portable handheld applications such as personal navigation devices (PNDs). This device integrates the ActivePath complete battery charging and management system with four power supply channels.
   
FEATURES
• ActivePathTM Li+ Charger with System Power
    Selection
• Four Integrated Regulators:
    − 1.3A High Efficiency Step-Down DC/DC
    − 1.0A High Efficiency Step-Down DC/DC
    − 0.55A High Efficiency Step-Down DC/DC
    − 30V Step-Up DC/DC for up to 7s × 3p WLEDs
• I2CTM Serial Interface
• Minimal External Components
• Compatible with USB or AC-Adapter Charging
• 5×5mm, Thin-QFN (TQFN55-40) Package
    − Only 0.75mm Height
    − RoHS Compliant
   
APPLICATIONS
• Personal Navigation Devices
• Portable Media Players
• Smart Phones