CN5611

CONSONANCE Low-Dropout High-Power LED Driver www.DataSheet4U.com CN5611 General Description: The CN5611 current regulator operates from a 2.7V to 6V input voltage range and delivers a constant current that is up to 800mA to high-brightness LEDs, including high-brightness white LED. The LED current of CN5611 can be adjusted from 30mA to 800mA by using an external resistor. An on-chip pass element minimizes external components while providing ±8% output current accuracy. Additional features include over temperature protection, LED short and open protection. The CN5611 is available in a thermally enhanced 5-pin SOT89 package. Features:           Operating Supply Voltage Range: 2.7V to 6V On-chip Pass Element Low-Dropout Voltage Adjustable Output Current up to 800mA Output Current Accuracy: ±8% Over Temperature Protection LED Open/Short Protection Operating Temperature Range: －40℃ to 85℃ Available in 5-pin SOT89 Packages Pb-free Pin Assignment VDD 1 GND 2 LED 3 5 Applications:      High-Power LED Driver LED Cap-Lamp Flash Light and Lighting Cell Phone, DSC and MP3 Player LCD and Keyboard Backlight NC CN5611 4 ISET Typical Application Circuit Input Supply Voltage 2.7V to 6V VDD LED RISET CN5611 ISET GND LED Figure 1 Typical Application Circuit www.consonance-elec.com REV 1.2 1 www.DataSheet4U.com Block Diagram VDD ISET LED + Bandgap Reference Current Mirror GND Figure 2 Block Diagram Pin Description Pin No. 1 2 3 Name VDD GND LED Function Descripti...