General Description
The RT9511 is a fully integrated low cost solution with a single-cell Li-Ion battery charger and two high efficiency step-down DC/DC converters ideal for portable applications.
FEATUREs
● Battery Charger
► Automatic Input Supplies Selection
► 18V Maximum Rating for AC Adapter
► Integrated Selectable 100mA and 500mA USB Charge Current
► Internal Integrated Power FETs
► Charge Status Indicator
► External Capacitor Programmable Safety Timer
► Under Voltage Protection
► Over Voltage Protection
► Automatic Recharge Feature
► Battery Temperature Monitoring
► Thermal Feedback Optimizing Charge Rate
► Power Path Controller
● Step-Down DC/DC Converter
► Adjustable Output from 0.6V to VIN
► 1A Output Current
► 95% Efficiency
► No Schottky Diode Required
► 1.5MHz Fixed-Frequency PWM Operation
● Small 24-Lead WQFN Package
● RoHS Compliant and Halogen Free
APPLICATIONs
● MP3/MP4 Player
● GPS
● Digital Photo Frame
● Hand held Device