EVQ3369-R-00A

EVQ3369-R-00A 6 Channels, Max.100mA/Ch Boost WLED Driver With 15000:1 Dim Ratio and I2C DESCRIPTION FEATURES The MPQ3369 is a step-up converter with 6channel current sources. It is designed for driving the white LED arrays as backlighting of middle or small size LCD panel. The MPQ3369 uses peak-current mode as its PWM control architecture to regulate the boost converter. 6 channel current sources are applied into the LED cathode to adjust the LED brightness. It regulates the current in each LED string to the value set by an external currentsetting resistor, with 2.5% current regulation accuracy between strings. MPQ3369 employs a low on-resistor MOSFET and a low headroom voltage design to get the higher efficiency. It has standard I2C digital interface for easy use. The switching frequency can be programmed by a resistor, I2C interface or external clock. MPQ3369 provides analog/PWM/mix dimming mode with PWM input. Dimming mode can be selected by I2C interface or MIX/AD pin. It also has the phase shift function to eliminate the noise when PWM dimming. Rich protections are designed to guarantee safety operation. The protection modes include OCP (over-current protection), OVP (overvoltage protection), OTP (over-temperature protection), LED short and open protection. Besides, the LED current decreases automatically at higher temperature. The MPQ3369 is available in QFN244mmX4mm and TSSOP28-EP package. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage VIN 12 V Output Voltage VLED