General Description
The RT9278 is a compact, high efficiency, synchronous step-up converter, it provides a power supply solution for products powered by either two-cell, three-cell Alkaline/NiMH or one-cell Li-Ion/Li-polymer battery.

Features
• 95%Efficiency Synchronous Boost Converter
• High Supply Capability
• 2A Current Limit
• Input Voltage Range : 1.5V to 5.5V
• 600kHz Fixed Switching Rate
• Adjustable Output Voltage Options Up to 5.5V
• Output Voltage Keep Regulated when Input Voltage Exceed Setting Output Voltage
• 1mA Supply Current in Shutdown Mode
• External Compensation Network
• Build in Linear Controller for Linear Regulator
• Over Temperature Protection
• Small 10-Lead VDFN Package
• RoHS Compliant and 100% Lead (Pb)-Free

Applications
• Digital Still Camera
• Camera White LED Flash Light
• PDAs
• PortableDevice