NCP5005

Compact Backlight LED Boost Driver•2.7 to 5.5 V Input Voltage Range• Vout to 24 V Output Compliance Allows up to 5 LEDs Drive in Series• Built−in Overvoltage Protection• Full EMI Immunity• Inductor Based Converter brings up to 90% Efficiency• Constant Output Current Regulation• 0.3 A Standby Quiescent Current• Includes Dimming Function (PWM)• Enable Function Driven Directly from Low Battery Voltage Source• Automatic LEDs Current Matching• Thermal Shutdown Protection• All Pins are Fully ESD Protected• SOT23-25 PackageThe NCP5005 is a high efficiency boost converter operating in current loop, based on a PFM mode, to drive White LED. The current mode regulation allows a uniform brightness of the LEDs. The chip has been optimized for small ceramic capacitors, capable to supply up to 1.0 W output power.Typical Applications:• LED Display Back Light Control• Keyboard Back Light• High Efficiency Step Up Converter