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 6- 3.5V to 36V Input Voltage Range channel current sources. It is designed for 6 Channels with Max. 100mA per Channel driving the white LED arrays as backlighting of Internal 100m, 50V MOSFET middle or small size LCD panel. Programmable Up to 2.2MHz Fsw External Sync SW Function The MPQ3369 uses peak-current mode as its Multi-Dimming Operation Mode thru PWM PWM control architecture to regulate the boost input Including: converter. 6 channel current sources are 1. Direct PWM Dimming applied into the LED cathode to adjust the LED 2. Analog Dimming brightness. It regulates the current in each LED 3. Mix Dimming with 25%/12.5% transfer string to the value set by an external current- point setting resistor, with 2.5% current regulation accuracy between strings. 15000:1 Dim Ratio in PWM Dim at Fpwm200Hz MPQ3369 employs a low on-resistor MOSFET 200:1 Dim Ratio at Analog Dim thru PWM and a low headroom voltage design to get the Dim Signal Input. 2 higher efficiency. It has standard I C digital Excellent EMI Performance, Frequency interface for easy use. The switching frequency Spread Spectrum 2 can be programmed by a resistor, I C interface 2 I C Interface or external clock. Phase Shift Function for PWM Dimming MPQ3369 provides analog/PWM/mix dimming 2.5% Current Matching mode with PWM input. Dimming mode can be Cycle by Cycle Current Limit 2 selected by I C interface or MIX/AD pin. It also Disconnect Vout from Vin has the phase shift function to eliminate the LED Current Auto Decrement at High noise when PWM dimming. Temperature Rich protections are designed to guarantee LED Short/Open, OTP, OCP, Inductor safety operation. The protection modes include Short Protection OCP (over-current protection), OVP (over- Programmable LED Short Threshold voltage protection), OTP (over-temperature Programmable OVP Threshold protection), LED short and open protection. Fault Indicator Signal Output Besides, the LED current decreases QFN24-4mmX4mm and TSSOP28-EP automatically at higher temperature. Package The MPQ3369 is available in QFN24- APPLICATIONS 4mmX4mm and TSSOP28-EP package. Tablet/Notebook Auto-motive Display ELECTRICAL SPECIFICATIONS All MPS parts are lead-free, halogen-free, and adhere to the RoHS Parameter Symbol Value Units directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are Input Voltage V 12 V IN trademarks of Monolithic Power Systems, Inc. or its subsidiaries. Output Voltage VLED <50 V LEDs 6 string LED Current I 50 mA LED /string EVQ3369-R-00A Rev.1.1 www.MonolithicPower.com 1 10/18/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. EVQ3369-R-00A 6 CHANNELS BOOST WLED DRIVER WITH HIGH DIM RATIO AND I2C EVQ3369-R-00A EVALUATION BOARD (L x W) 6.35cm x 5.25cm Board Number MPS IC Number EVQ3369-R-00A MPQ3369GR EVALUATION BOARD SCHEMATIC Typical Application for 6 Strings, 12 LED in series 50mA/string EVQ3369-R-00A Rev.1.1 www.MonolithicPower.com 2 10/18/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.