MP3376GR-XXXX-P

MP3376 8-Channel, Synchronous, Boost, WLED Driver with I2C Interface The Future of Analog IC Technology DESCRIPTION FEATURES The MP3376 is a synchronous boostconverter with eight current channels designed to drive WLED arrays for LCDpanelsin tablets and notebook backlighting applications.   The MP3376 uses peak-current-mode and pulse-width modulation (PWM) control to maintainboost converter regulation. The MP3376employs a standard I2C digital interface to set the operation mode,switching frequency, full-scale current for each channel, sync or non-sync mode, dimming mode and duty, and various protection thresholds. The MP3376 features high efficiency with a small on resistance of the switching MOSFET. The synchronous rectifier saves PCB size and total BOM cost. The MP3376 is available (4mmx4mm) package. in a         QFN-24       8Channels with Max50mA/Channel Synchronous Converter with LS-FET/HSFET 160mΩ/260mΩOn Resistance 3V to 30V Input Voltage Range Up to 36V Output Voltage Max 2.5% Current Matching 350kHz/500kHz/650kHz/800kHz/950kHz/1. 2MHz/1.8MHz/2.4MHz Selectable Switching Frequency A0, A1 Pins for FourI2C Addresses 0mA to 50mA Full-Scale Current Set, 8Bit,0.196mA/Step Selectable Sync or Non-Sync Mode Multi-Dimming Operation Mode Including: o Analog Dimming ModethroughExternal PWM Input o Analog Dimming Modethrough I2C Interface o MixedDimming Mode throughExternal PWM Input with6.25%/12.5%/25%/50%Transfer Point o MixedDimming Mode through I2C Interface with 6.25%/12.5%/25%/50% Transfer Point Customizable Default Register Values Linear Smooth Dimming with 2/4/8/16/32/64/128µs for Per-StepSlope Set Unused LED String Auto-Disable during Start-Up LED Short/Open, OTP, OCP, Inductor or Diode Short Protection o 2.5 / 5 / 7.5 / 10V LED Short Threshold o 24/31/36V OVP Threshold o 1.8 /2.5A Cycle-by-Cycle Current Limit Free for Adjacent Pin Short Test Available in a QFN-24(4mmx4mm)Package APPLICATIONS   Tablets/Notebooks Automotive Displays All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. MP3376 Rev.1.0 8/24/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 1 MP3376 – 8-CHANNEL, SYNCHRONOUS, BOOST, WLED DRIVER WITH I2C TYPICAL APPLICATION MP3376 Rev.1.0 8/24/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 2 MP3376 – 8-CHANNEL, SYNCHRONOUS, BOOST, WLED DRIVER WITH I2C ORDERING INFORMATION Part Number* MP3376GR-XXXX** Package QFN-24 (4mmx4mm) Top Marking See Below * For Tape & Reel, add suffix –Z (e.g. MP3376GR-XXXX-Z) ** “XXXX” is the register setting option. The factory default is “0000.” This content can be viewed in Table 1 through Table 6. For custom options, please contact an MPS FAE to obtain a “XXXX” value. TOP MARKING MPS: MPS prefix Y: Year code WW: Week code MP3376: Part number LLLLLL: Lot number PACKAGE REFERENCE QFN-24 (4mmx4mm) MP3376 Rev.1.0 8/24/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 3 MP3376 – 8-CHANNEL, SYNCHRONOUS, BOOST, WLED DRIVER WITH I2C ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance VSW, VOUT.......................................-0.3V to +40V VFT ................................................... VIN-6V to VIN VLEDX .............................................-0.3V to +40V VBST .......................................... -0.3V to VSW+6V VIN .................................................-0.3V to +32V All other pins ................................-0.3V to +6.5V Junction temperature ................................150°C Lead temperature .....................................260°C (2) Continuous power dissipationTA = 25°C QFN-24 (4mmx4mm) ................................. 2.7W QFN-24 (4mmx4mm) ............. 46 ....... 10 ... °C/W (3) Recommended Operating Conditions Supply voltage (VIN) ........................... 3V to 30V Operating junction temp. (TJ) ... -40°C to +125°C MP3376 Rev.1.0 8/24/2017 (4) θJA θJC NOTES: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation produces an excessive die temperature, causing the regulator to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 4 MP3376 – 8-CHANNEL, SYNCHRONOUS, BOOST, WLED DRIVER WITH I2C ELECTRICAL CHARACTERISTICS VIN =3.7V, VEN = 2V, TA = 25°C, unless otherwise noted. Parameter Symbol Operating input voltage Supply current (quiescent) Supply current (shutdown) Input UVLO threshold Input UVLO hysteresis LDO output voltage EN on threshold EN off threshold EN pull-down resistor A0, A1 low threshold A0, A1 high threshold A0, A1 pull-up resistor Step-Up Converter Low-side MOSFETonresistance High-side MOSFETonresistance SW leakage current Switching frequency Maximum duty cycle SW current limit Current Dimming PWM input low threshold PWM input high threshold PWM pull-down resistor Mix dimming transfer point LEDcurrent up/down slope PWM dimming frequency set by I2C LED Current Regulator LEDX regulation voltage Current matching(5) Full-scale current MP3376 Rev.1.0 8/24/2017 VIN IQ IST VIN UVLO VCC VEN ON VEN OFF RP EN VA Lo VA Hi RP A Condition Min Typ 2.7 VIN=VEN=3.7V, no switching VEN=0V, VIN=3.7V Rising edge VEN=2V, 6V