MPQ3364GR-AEC1-Z

MPQ3364 4-Channel, Maximum 150mA/Ch Boost WLED Driver with 15000:1 Dimming Ratio and I2C, AEC-Q100 DESCRIPTION FEATURES The MPQ3364 is a step-up converter with 4 channel current sources. The device is designed to drive white LED arrays as backlighting for small- or medium-sized LCD panels.   The device uses peak current mode as its PWM control architecture to regulate the boost converter. Four channel current sources are applied to the LED cathode to adjust LED brightness. The MPQ3364 regulates the current in each LED string to the value set by an external current-setting resistor, with 2.5% current regulation accuracy between strings. A low on resistance MOSFET and headroom voltage are provided to improve efficiency. The MPQ3364 has a standard I2C digital interface for easy use. The switching frequency can be configured via a resistor, I2C interface, or external clock. The MPQ3364 provides analog, PWM, and mix dimming modes with a PWM input. The dimming mode can be selected via the I2C interface or the MIX/AD pin. The device 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 LED open protection. The MPQ3364 can automatically decrease the LED current at higher temperatures. The MPQ3364 is available in a QFN-24 (4mmx4mm) package.                    3.5V to 36V Input Voltage Range 4 Channels with Maximum 150mA per Channel Internal 100mΩ, 50V MOSFET Configurable fSW Up to 2.2MHz External Sync SW Function Multi-Dimming Operation through PWM Input, Including: o Direct PWM Dimming o Analog Dimming o Mix Dimming with 25% or 12.5% Transfer Point 15000:1 Dimming Ratio in PWM Dimming when fPWM ≤ 200Hz 200:1 Dimming Ratio during Analog Dimming through PWM Dimming Signal Input Excellent EMI Performance, Frequency Spread Spectrum I2C Interface with 3 Selectable IC Addresses Phase Shift Function for PWM Dimming 2.5% Current Matching Cycle-by-Cycle Current Limiting Disconnect VOUT from VIN Optional LED Current Can Automatically Decrease at Higher Temperatures LED Short/Open, OTP, OCP, and Inductor Short Protection Configurable LED Short Threshold Configurable OVP Threshold Fault Indicator Signal Output Available in a QFN-24 (4mmx4mm) Package Available in AEC-Q100 Grade 1 APPLICATIONS   Tablets and Notebooks Automotive Displays 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 trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MPQ3364 Rev. 1.1 MonolithicPower.com 7/7/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 1 MPQ3364 – 4-CH BOOST WLED DRIVER WITH HIGH DIM RATIO AND I2C, AEC-Q100 TYPICAL APPLICATION L1 D1 VIN C1 VOUT C2 GND C3 R2 R3 R6 7 8 9 String 4 String 3 String 2 String 1 STH OVP ADR SD MPQ3364 SCL/PSE 6 SDA/PSE R4 18 AGND EN AGND 5 FREQ/SYNC 19 SW 17 PGND 16 LED1 15 LED2 14 LED3 LED4 13 AGND SDA 4 ISET EN SCL 3 DIM MIX/AD FF R1 2 22 21 20 VCC 1 R5 COMP PWM VIN 24 23 10 11 12 R9 R7 R8 C4 VCC FF MPQ3364 Rev. 1.1 MonolithicPower.com 7/7/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2 MPQ3364 – 4-CH BOOST WLED DRIVER WITH HIGH DIM RATIO AND I2C, AEC-Q100 ORDERING INFORMATION Part Number* Package Top Marking MSL Rating MPQ3364GR-AEC1* MPQ3364GRE-AEC1** QFN-24 (4mmx4mm) QFN-24 (4mmx4mm) WF See Below See Below 1 *Tape & Reel, add suffix -Z (e.g. MPQ3364GR-AEC1-Z). ** For Tape & Reel, add suffix -Z (e.g. MPQ3364GRE-AEC1-Z). TOP MARKING (MPQ3364GR-AEC1) MPS: MPS prefix Y: Year code WW: Week code MP3364: Part number LLLLLL: Lot number TOP MARKING (MPQ3364GRE-AEC1) MPS: MPS prefix Y: Year code WW: Week code MP3364: Part number LLLLLL: Lot number E: Wettable lead flank MPQ3364 Rev. 1.1 MonolithicPower.com 7/7/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 3 MPQ3364 – 4-CH BOOST WLED DRIVER WITH HIGH DIM RATIO AND I2C, AEC-Q100 PACKAGE REFERENCE OVP 19 20 STH 21 ADR SD 23 22 VCC VIN 24 TOP VIEW DIM 1 18 SW MIX/AD 2 17 PGND FREQ/SYNC 3 16 LED1 EN 4 15 LED2 SCL/PSE 5 14 LED3 SDA/PSE 6 13 LED4 Exposed Pad AGND 12 AGND 11 AGND 10 8 FF ISET 9 7 COMP Connect to AGND QFN-24 (4mmx4mm) MPQ3364 Rev. 1.1 MonolithicPower.com 7/7/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 4 MPQ3364 – 4-CH BOOST WLED DRIVER WITH HIGH DIM RATIO AND I2C, AEC-Q100 PIN FUNCTIONS Pin # Name 1 DIM 2 MIX/AD 3 FREQ/ SYNC 4 EN 5 SCL/PSE 6 SDA/PSE 7 8 COMP FF 9 ISET 10, 11, 12 AGND Analog ground. 13 14 15 16 17 18 LED4 LED3 LED2 LED1 PGND SW LED string 4 current input. Connect the LED string 4 cathode to this pin. LED string 3 current input. Connect the LED string 3 cathode to this pin. LED string 2 current input. Connect the LED string 2 cathode to this pin. LED string 1 current input. Connect the LED string 1 cathode to this pin. Step-up converter power ground. Drain for the internal low-side MOSFET switch. Connect the power inductor to SW. 19 OVP 20 STH 21 ADR 22 VCC 23 SD 24 Exposed pad VIN AGND Description PWM signal input pin. Apply a PWM signal on the DIM pin for brightness control. DIM is pulled low internally, and a 100Hz to 20kHz PWM signal is recommended. Dimming mode setting pin. MIX/AD is a current-source output (18μA). Connect a resistor to this pin to configure its voltage. When MIX/AD is low (