BL0202B

High Efficiency For LED Backlight 2ch LED Driver IC BL0200 Series 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. Package SOP18 Features and Benefit Boost convertor ● Current-Mode type PWM Control ● PWM frequency is 100 kHz o r 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 Not to scale Lineup Products BL0202C BL0202B BL0200C Frequency 200 kHz 100 kHz VREG Accuracy ± 1.5 % Built-in Function Enable Function of IC 200 kHz ± 2 % Error Signal Output Applications ● LED backlights ● LED lighting etc. Typical Application Circuit BL0202B/C ...