Multiple LED Charge Pump Driver

The NCP5608 is a high efficiency boost converter operating in current loop, based on a charge pump multi mode, to drive White LED. The current mode regulation allows a uniform and programmable brightness of the LEDs. The chip has been optimized for small ceramic capacitors, capable to supply up to 2.0 W output power.

FEATUREs
• 2.7 to 5.5 V Input Voltage Range
• Up to 500 mA Output Current
• Capable to Drive 8 LED
• Multi Mode Charge Pump Based Converter
• I2C Serial Link Protocol
• Consistent High Efficiency
• Independently Block Programmable Output Currents
• Programmable 3 or 4 Operating Backlight LED at Zero Extra Losses
• Constant Output Current Regulation
• Built−in Dimming Function
• Tight Automatic LED Current Matching
• Thermal Shutdown Protection
• Low Battery Return Noise
• This is a Pb−Free Device*

Typical Applications
• LED Display Back Light Control
• Keyboard Back Light
• High Power Photo Flash
• Multiple Displays