NCV78825 High Efficiency 3 A Synchronous Buck Dual LED Driver with Integrated High Side Switch and Current Sensing for www.onsemi.com Automotive Front Lighting Description The NCV78825 is a singlechip and high efficient Synchronous SSOP36 EP Buck Dual LED Driver designed for automotive front lighting CASE 940AB applications like high beam, low beam, DRL (daytime running light), turn indicator, fog light, static cornering, etc. The NCV78825 is in particular designed for high current LEDs and provides a complete MARKING DIAGRAM solution to drive 2 LED strings of upto 60 V. It includes 2 independent current regulators for the LED strings and required diagnostic features for automotive front lighting with a minimum of external components the chip doesnt need any external sense NV788250 resistor for the buck current regulation. The available output current AWLYYWWG and voltages can be customized per individual LED string. When more than 2 LED channels are required on 1 module, then 2, 3 or more devices NCV78825 can be combined also with NCV787x3 devices the predecessor of the NCV78825. Thanks to the SPI A = Assembly Location programmability, one single hardware configuration can support WL = Wafer Lot various application platforms. YY = Year WW = Work Week Features G = PbFree Package Single Chip Buck Topology ORDERING INFORMATION 2 LED Strings upto 60 V See detailed ordering and shipping information on page 2 of this data sheet. High Current Capability up to 3 A DC per Output Integrated High Side Switch Low Side Predriver for External NMOS Device Typical Applications High Overall Efficiency High Beam Minimum of External Components Low Beam Integrated High Accuracy Current Sensing DRL Integrated Switched Mode Buck Current Regulator Position or Park Light Average Current Regulation Through the LEDs Turn Indicator High Operating Frequencies to Reduce Inductor Sizes Fog Low EMC Emission for LED Switching and Dimming Static Cornering SPI Interface for Dynamic Control of System Parameters Fail Safe Operating (FSO) Mode, StandAlone Mode MasterSlave Synchronization Mode of the Buck Channels NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements AECQ100 Qualified and PPAP Capable This is a PbFree Device Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: February, 2018 Rev. 1 NCV78825/DNCV78825 ORDERING INFORMATION Table 1. AVAILABLE PART NUMBERS Device Marking Package* Shipping NCV78825DQ0R2G NV788250 SSOP36 EP 1500 / Tape & Reel (Pb Free) *For additional information on our PbFree strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. TYPICAL APPLICATION SCHEMATIC VBOOST C M3V LEDstring 1 VINBCK1 L BCK 1 LBCKSW1 VDRIVE LSFET1 T LS 1 C DRV GNDS1 VDRIVE R LED 1 VLED1 VIO of MCU C LED 1 C DD NCV78825 LEDstring 2 VDD C R SDO VINBCK2 L BCK 2 LBCKSW2 RSTB C BCK 2 C LSFET2 LEDCTRL1 T LS 2 LEDCTRL2 GNDS2 SCLK SDI R LED 2 SDO VLED2 CSB C LED 2 EXPOSED TEST GND PAD Figure 1. Typical Application Schematic www.onsemi.com 2 TEST1 TEST2 VBOOSTM3V VBOOST C BCK 1