MPQ3369-AEC1 6-Channel, Max 100mA/Ch Boost WLED Driver 2 with 15000:1 Dim Ratio and I C FEATURES DESCRIPTION 3.5V to 36V Input Voltage Range The MPQ3369-AEC1 is a step-up converter with 6 Channels with Max 100mA per Channel six channel current sources, designed to drive Internal 100m, 50V MOSFET white LED arrays as backlighting in small-to-mid- Programmable Up to 2.2MHz f SW size LCD panels. External Sync SW Function The MPQ3369-AEC1 uses peak current mode Multi-Dimming Operation Mode through as its PWM control architecture to regulate the PWM Input, Including: boost converter. Six channel current sources are o Direct PWM Dimming applied into the LED cathode to adjust the LED o Analog Dimming brightness. It regulates the current in each LED o Mix Dimming with 25%/12.5% string to the value set via an external current- Transfer Point setting resistor, with 2.5% current regulation 15000:1 Dim Ratio in PWM Dim at f PWM accuracy between strings. 200Hz The MPQ3369-AEC1 employs a low on-resistor 200:1 Dim Ratio at Analog Dim through MOSFET and a low headroom voltage, designed PWM Dim Signal Input 2 for higher efficiency. It has a standard I C digital Excellent EMI Performance, Frequency interface for ease of use. The switching Spread Spectrum 2 2 frequency can be programmed by a resistor, I C I C Interface interface, or external clock. Phase Shift Function for PWM Dimming 2.5% Current Matching The device provides analog, PWM, and mix Cycle-by-Cycle Current Limit dimming mode with a PWM input. The dimming 2 Disconnect VOUT from VIN mode can be selected with the I C interface or the MIX/AD pin. It also has a phase shift function Optional LED Current Auto-Decrement at to eliminate noise during PWM dimming. High Temperature LED Short/Open, OTP, OCP, Inductor Robust protections are included to guarantee Short Protection safe operation of the device. Protection modes Programmable LED Short Threshold include over-current protection (OCP), over- Programmable OVP Threshold voltage protection (OVP), over-temperature Fault Indicator Signal Output protection (OTP), LED short, and open Available in QFN-24 (4mmx4mm) and protection. There is also an option that TSSOP28-EP Packages decreases the LED current automatically at AEC-Q100 Qualified higher temperatures. The MPQ3369-AEC1 is available in QFN-24 APPLICATIONS (4mmx4mm) and TSSOP28-EP packages. Tablet/Notebook Automotive Display All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MPQ3369-AEC1 Rev. 1.01 www.MonolithicPower.com 1 7/3/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. 2 MPQ3369-AEC1 6-CHANNEL BOOST WLED DRIVER W/ HIGH DIM RATIO AND I C TYPICAL APPLICATION L1 D1 VIN VOUT C1 C2 GND C3 R2 R3 24 23 22 21 20 19 R4 1 18 PWM DIM SW R5 2 17 MIX/AD PGND R1 3 16 FREQ/SYNC LED1 4 15 MPQ3369-AEC1 EN EN LED2 5 14 SCL SCL/PSE LED3 6 13 SDA/PSE LED4 SDA 7 8 9 10 11 12 R9 R8 R7 C4 VCC FF MPQ3369-AEC1 Rev. 1.01 www.MonolithicPower.com 2 7/3/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. COMP VIN SD FF ISET VCC FSP AGND STH LED6 OVP LED5 String 1 String 2 String 3 String 4 String 5 String 6