High Voltage White LED Driver with Ambient Light Sensing

The NCP5021 product is a single output boost LED driver capable of driving up to 8 LEDs in series for portable backlight applications.
The built−in DC/DC converter is based on a high efficient PWM boost structure with 32 V output voltage span. It provides a peak 90% efficiency together with a 1% I−LED current tolerance.

FEATUREs
• 2.7 to 5.5 V Input Voltage Range
• 90% Peak efficiency with 4.7 H / 150 mΩ Inductor
• Gradual Dimming Built−in (Automatic Fade In/Fade Out Effect)
• Integrated Ambient Light Sensing Automatically Adjusts the LCD Backlight Contrast
• Built−in Zero Current Load Leakage under Idle Mode
• Support the Full I2C Protocol with Address Extension
• Tight 1% I−LED Tolerance
• Ultra Thin 0.5 mm QFN16 Package
• This is a Pb−Free Device

Typical Applications
• Cellular Phone, Smartphone
• Portable Media Player (PMP)
• Global Positioning System (GPS)