High Efficiency White LED Driver

The NCP5680 product is a High Power charge pump driver dedicated to the recycling of a large Super Cap capacitor.
The built−in DC/DC converter is based on a high efficient charge pump structure with 1X, 1.5X and 2X operating modes. It supports double power flash LED and torch operation. The controller is designed to properly drives large external NMOS device with accurate control of the peak current flowing into the LED. Also, the chip includes Open Load and Overload Detection circuit to protect the system against faults at Vout or LED level.

FEATUREs
• 2.7 to 5.5 V Input Voltage Range
• Dual Power Flash LED Capability
• Integrated Overload Protection
• Selectable Flash/Torch Mode of Operation
• Programmable SuperCAP Re−cycling Current
• Capable to Share the DC Voltage to Supply Peripheral Circuits
• Indicator LED Function
• Integrated Photo Sense Function
• Support Camera Strobe
• Built−in Short Circuit Protection
• Selectable Flash Time Out Safety Timing
• Support External NMOS up to 10 A Load Capability
• Embedded SuperCAP Vbias
• Fully I2C Protocol Compliant
• Support GSM Synchronization
• Built−in LED Test Function
• This is a Halide−Free Device
• This is a Pb−Free Device

Typical Applications
• Portable Photo Flash
• Digital Cellular Phone Camera Photo Flash