General Descriptions BL0200 series are 2ch output LED driver IC for LED backlight, and it can do dimming to 0.02 % by external PWM signal. This IC realizes a high efficiency by the boost convertor control that absorbs variability on VF. The product easily achieves high cost-performance LED drive system with few external components and enhanced protection functions. Features and Benefit Boost convertor ● Current-Mode type PWM Control ● PWM frequency is 100 kHz or 200 kHz ● Maximum On Duty is 90 % LED current control ● Individual PWM Dimming Control ● Analog Dimming ● High contrast ratio is 1 / 5000 ● Accuracy of Reg output voltage is ± 1.5 % or ± 2 % Protection functions ● Enable Function of IC (BL0202B, BL0202C) ● Error Signal Output (BL0200C) ● Overcurrent Protection for Boost Circuit (OCP) ———————————————-Pulse-by-pulse ● Overcurrent Protection for LED Output (LED_OCP) ———————————————-Pulse-by-pulse ● Overvoltage Protection (OVP) ———– Auto restart ● Output Open/Short Protection ———— Auto restart ● Thermal Shutdown (TSD)—————– Auto restart