MPQ3369GR-AEC1-P

MPQ3369-AEC1 6-Channel, Max 100mA/Ch Boost WLED Driver with 15000:1 Dim Ratio and I2C DESCRIPTION The MPQ3369-AEC1 is a step-up converter with six channel current sources, designed to drive white LED arrays as backlighting in small-to-midsize LCD panels. The MPQ3369-AEC1 uses peak current mode as its PWM control architecture to regulate the boost converter. Six 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 via an external currentsetting resistor, with 2.5% current regulation accuracy between strings. The MPQ3369-AEC1 employs a low on-resistor MOSFET and a low headroom voltage, designed for higher efficiency. It has a standard I2C digital interface for ease of use. The switching frequency can be programmed by a resistor, I2C interface, or external clock. The device provides analog, PWM, and mix dimming mode with a PWM input. The dimming mode can be selected with the I2C interface or the MIX/AD pin. It also has a phase shift function to eliminate noise during PWM dimming. Robust protections are included to guarantee safe operation of the device. Protection modes include over-current protection (OCP), overvoltage protection (OVP), over-temperature protection (OTP), LED short, and open protection. There is also an option that decreases the LED current automatically at higher temperatures. The MPQ3369-AEC1 is available in QFN-24 (4mmx4mm) and TSSOP28-EP packages. FEATURES                      3.5V to 36V Input Voltage Range 6 Channels with Max 100mA per Channel Internal 100mΩ, 50V MOSFET Programmable Up to 2.2MHz fSW External Sync SW Function Multi-Dimming Operation Mode through PWM Input, Including: o Direct PWM Dimming o Analog Dimming o Mix Dimming with 25%/12.5% Transfer Point 15000:1 Dim Ratio in PWM Dim at fPWM ≤ 200Hz 200:1 Dim Ratio at Analog Dim through PWM Dim Signal Input Excellent EMI Performance, Frequency Spread Spectrum I2C Interface Phase Shift Function for PWM Dimming 2.5% Current Matching Cycle-by-Cycle Current Limit Disconnect VOUT from VIN Optional LED Current Auto-Decrement at High Temperature LED Short/Open, OTP, OCP, Inductor Short Protection Programmable LED Short Threshold Programmable OVP Threshold Fault Indicator Signal Output Available in QFN-24 (4mmx4mm) and TSSOP28-EP Packages AEC-Q100 Qualified APPLICATIONS   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 7/3/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 1 MPQ3369-AEC1 – 6-CHANNEL BOOST WLED DRIVER W/ HIGH DIM RATIO AND I2C TYPICAL APPLICATION L1 D1 VOUT VIN C1 C2 GND C3 R2 LED1 MPQ3369-AEC1 LED2 SCL/PSE 7 8 AGND 6 SDA/PSE 9 String 6 String 5 String 4 String 3 17 16 String 2 18 15 14 LED3 LED4 13 LED5 EN R4 String 1 OVP FSP STH SD PGND FREQ/SYNC ISET SDA 5 19 SW LED6 4 EN SCL DIM 2 MIX/AD 3 FF R1 22 21 20 VCC 1 R5 COMP PWM VIN 24 23 R3 10 11 12 R9 R7 R8 C4 VCC FF MPQ3369-AEC1 Rev. 1.01 www.MonolithicPower.com 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 I2C ORDERING INFORMATION Part Number* Package Top Marking MPQ3369GR-AEC1* QFN-24 (4mmX4mm) See Below MPQ3369GF-AEC1** TSSOP28-EP See Below * For Tape & Reel, add suffix –Z (e.g. MPQ3369GR–AEC1-Z). ** For Tape & Reel, add suffix –Z (e.g. MPQ3369GF–AEC1-Z). TOP MARKING (MPQ3369GR-AEC1) MPS: MPS prefix Y: Year code WW: Week code MP3369: Part number LLLLLL: Lot number TOP MARKING (MPQ3369GF-AEC1) MPS: MPS prefix YY: Year code WW: Week code MP3369: Part number LLLLLLLLL: Lot number MPQ3369-AEC1 Rev. 1.01 www.MonolithicPower.com 7/3/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 3 MPQ3369-AEC1 – 6-CHANNEL BOOST WLED DRIVER W/ HIGH DIM RATIO AND I2C PACKAGE REFERENCE TOP VIEW TOP VIEW QFN-24 (4mmx4mm) TSSOP28-EP MPQ3369-AEC1 Rev. 1.01 www.MonolithicPower.com 7/3/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 4 MPQ3369-AEC1 – 6-CHANNEL BOOST WLED DRIVER W/ HIGH DIM RATIO AND I2C PIN FUNCTIONS QFN-24 TSSOP28-EP Pin # Pin # Name 1 5 DIM 2 6 MIX/AD 3 7 4 8 5 9 Description PWM signal input pin. Apply a PWM signal on DIM for brightness control. Pulled low internally. A 100Hz to 20kHz PWM signal is recommended. Dimming mode set pin. MIX/AD is a current-source output (18μA). Connect a resistor to program its voltage. When MIX/AD is low-level (