? High-Brightness LED Driver IC Features MOS built-efficiency can be as high as 90% input voltage range:?? 8 ~ 85VDC LED constant current driver can drive adding up to over 25 LED string voltage protection, thermal protection, Saturation Protection???? ? LED open circuit protection external components Operating temperature:? -40 ~ 85 ℃ Package:? SOP8 Overview R8110 is a high-efficiency LED driver control chip fixed Toff technical design, using a unique anti-jamming technology, the LED brightness is more stable. CMOS process design, integration of the built-in voltage regulator, undervoltage protection, thermal protection, Saturation Protection, RC oscillator, dimming controller, the system controller and the output drivers and other modules. In 8VDC to 85VDC input voltage range of efficient driving high brightness LED. R8110 ROSC pin through an external resistor setting to adjust the operating frequency of the system; external high-brightness LED string is driven by a constant current to maintain the LED brightness and improve reliability of the LED, its current value by the end of CS external resistor to set . R8110 can be controlled isolated or non-isolated, continuous or discontinuous and other types of converters. When the power MOSFET is turned on, depending on the type of converter, the primary inductance of the transformer or an inductor, or the storage portion of the energy directly to the LED string or array; when the power MOSFET is turned off, the energy stored in the inductance of the LED is converted to drive current. R8110 voltage (VDD side) is higher than VUVLO, internal power station opened, then R8110 by limiting external transformer primary inductance or inductor peak current mode. External current sense resistor and an internal power source is connected to the tube, when the voltage value of the external sense resistor exceeds a set value (internally set to 210mv), turn off the internal power MOSFET. Applications LED drive power