ABRIDGED DATA SHEET EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX20096/MAX20097 Dual-Channel Synchronous Buck, High-Brightness LED Controller with and without SPI Interface General Description Benefits and Features The MAX20096/MAX20097 are dual-channel, high- Integration Minimizes BOM for High-Brightness LED voltage, synchronous n-channel high-current buck LED Driver, Saving Space and Cost drivers. The ICs use a proprietary average current-mode- Wide 4.5V to 65V Input Voltage Range control scheme to regulate the inductor current. This No Compensation Components control method does not require any control-loop compen- Programmable Switching Frequency sation, maintaining nearly constant switching frequency. External MOSFETs that are Sizable for the Inductor current sense is achieved by sensing the current Appropriate Current in the bottom switching device. The ICs integrate two fully Wide Dimming Ratio Allows High-Contrast Ratio synchronous buck-converter controllers, and operate over Analog Dimming a wide 4.5V to 65V input range. The ICs are designed for PWM Dimming high-frequency operation and can operate at switching Suitable for Matrix Lighting frequencies as high as 1MHz. Maintains Current Regulation While Shorting/ In the MAX20096, the output voltages and currents on Opening Individual LEDs in the String both channels and the junction temperature can be read Ultra-Fast Response Control Loop Prevents back through the SPI interface. Protection features include Overshoots and Undershoots inductor current-limit protection, overvoltage protection, Protection Features and Wide Temperature Range and thermal shutdown. The MAX20096 is available in a Increase System Reliability space-saving thermally enhanced (5mm x 5mm), 32-pin Short Circuit, Overvoltage, and Thermal Protection side-wettable TQFN package and is specified to operate -40C to +125C Operating Temperature Range over the -40C to +125C automotive temperature range. Thermal Monitor and LED Current Monitor The MAX20097 is available in a 28-pin thermally enhanced Fault Diagnosis Through SPI Interface and Through TSSOP package, but does not have the SPI interface. It FLTB Pin for Applications without SPI Interface includes an open-drain fault flag (FLTB) that goes low in case of an open string, shorted string, or overvoltage activation in any one of the channels, or also in thermal shutdown. Applications Ordering Information appears at end of data sheet. Automotive Exterior Lighting High-Beam/Low-Beam/Signal/Position Lights Daytime Running Lights (DRLs) Fog Light and Adaptive Front Light Assemblies Commercial, Industrial, and Architectural Lighting 19-100097 Rev 2 2/19ABRIDGED DATA SHEET MAX20096/MAX20097 Dual-Channel Synchronous Buck, High-Brightness LED Controller with and without SPI Interface Buck Diagrams MAX20096 VIN C IN D1 V CC R1 IN BST1 Q1 V CC CBST1 V CC CVCC DH1 TON1 L1 R8 C1 R7 LX1 Q2 COUT1 R2 DL1 DIM1 R9 CSP1 DIM2 IOUTV1 R10 R3 C3 R CS1 MAX20096 R16 RESET FROM EXTERNAL CSN1 WATCHDOG RESETB OUT1 V IN VIN TON2 VCC R4 C4 IOUTV2 BST2 D2 VCC R15 C2 Q3 DH2 R11 R12 CBST2 REFI1 LX2 REFI2 L2 Q4 R13 C OUT2 R5 VIO DL2 CSB R14 SCLK CSP2 C R6 R SDI CS2 CSN2 SDO OUT2 EP AGND PGND Maxim Integrated 13 www.maximintegrated.com