EVQ3364-R-00A 36V, 150mA, 4-Channel, Boost WLED Driver 2 with 15000:1 Dimming Ratio and I C Evaluation Board, AEC-Q100 Qualified DESCRIPTION FEATURES The EVQ3364-R-00A is an evaluation board 3.5V to 36V Input Voltage Range designed to demonstrate the capabilities of the 4 Channels with 150mA Max per Channel MPQ3364, a four-channel step-up converter Internal 100m, 50V MOSFET designed to drive white LED (WLED) arrays as Up to 2.2MHz Configurable Switching backlighting for small or mid-sized liquid-crystal Frequency (f ) SW display (LCD) panels. Optional f Follows the External Clock SW Multiple Dimming Modes through the PWM Peak-current control is used as the pulse-width Input: modulation (PWM) control architecture for o PWM Dimming regulating the boost converter. Four channel- o Analog Dimming current sources are applied to the LED cathode o Mixed Dimming with 25% or 12.5% to adjust the LED brightness. This regulates the Transfer Point current in each LED string to the value set by an 15000:1 Dimming Ratio during PWM external current-setting resistor, with 2.5% Dimming when f 200Hz current regulation accuracy between strings. PWM The maximum current per channel is 150mA. 200:1 Dimming Ratio during Analog Dimming via PWM Signal Input The MPQ3364s low on resistance MOSFET and Excellent EMI Performance, Frequency low headroom voltage design improves Spread Spectrum efficiency. The device also has a standard digital 2 I C Interface, 3 Selectable IC Addresses 2 I C interface for easy flexibility. The switching Phase Shift Function for PWM Dimming frequency (f ) can be configured via a resistor, SW 2 2.5% Current Matching I C interface, or external clock. Cycle-by-Cycle Current Limiting The MPQ3364 features three dimming modes: Disconnect V from V OUT IN analog dimming, PWM dimming, and mixed Optional LED Current Auto-Decrement at dimming via the PWM input. The dimming mode High Temperatures 2 can be selected via the I C interface or MIX/AD LED Short Protection, LED Open pin. The IC also has a phase shift function that Protection, Over-Temperature Protection eliminates noise during PWM dimming. (OTP), Over-Current Protection (OCP), and Protection features include over-current Inductor Short Protection protection (OCP), over-voltage protection Configurable LED Short Threshold and (OVP), over-temperature protection (OTP), LED Over-Voltage (OV) Threshold short protection, and LED open protection. The Fault Indication Signal Output LED current automatically decreases at high Available in a QFN-24 (4mmx4mm) temperatures. Package Available in AEC-Q100 Grade 1 The MPQ3364 is available in a QFN-24 (4mmx4mm) package. APPLICATIONS ELECTRICAL SPECIFICATIONS Tablets Notebooks Parameter Symbol Value Units Input voltage VIN 12 V Automotive Displays Output voltage V <50 LED V All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. LEDs 4 strings For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are LED current (per ILED 50 mA trademarks of Monolithic Power Systems, Inc. or its subsidiaries. string) EVQ3364-R-00A Rev. 1.0 MonolithicPower.com 1 4/23/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. 2 EVQ3364-R-00A 4-CHANNEL WLED DRIVER WITH I C EVAL BOARD, AEC-Q100 EVQ3364-R-00A EVALUATION BOARD Top Layer Bottom Layer LxW (6.35cmx5.25cm) Board Number MPS IC Number EVQ3364-R-00A MPQ3364GRE EVQ3364-R-00A Rev. 1.0 MonolithicPower.com 2 4/23/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved.