MAX25613 Automotive Infrared LED Controller


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Maxim Integrated
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Create a design and simulate using EE-Sim® tools: The MAX25613 is a single-channel, high-current IR LED driver for automotive Driver Monitoring Systems (DMS). It can take an input voltage from 5V to 48V and can drive a string of LEDs with a maximum output voltage of 55V. The MAX25613 operates using a Maxim proprietary, dual-control architecture to achieve high LED drive capability while minimizing the di/dt on the battery harness. The MAX25613 senses output current at the high side of the LED string. High-side current sensing is required to protect against shorts from the output to the ground or battery input. The PWM input provides LED dimming ratios of up to 5000:1, and the ICTRL input provides additional analog dimming capability in the device. The MAX25613 also includes a fault flag that indicates LED short to battery, LED short to ground, LED open, and thermal shutdown. The MAX25613 has built-in spread-spectrum modulation for improved electromagnetic compatibility performance. The MAX25613 is available in a space-saving (4mm x 4mm) 20-pin side-wettable TQFN or a-20 pin TSSOP package, and is specified to operate over the -40°C to +125°C automotive temperature range

* High-Current LED Driver with Reduced di/dt on the Battery Harness * Boost/Buck Maxim Proprietary Control Architecture Implemented in a Single Controller IC with a Single nFET and Single Inductor * Protection Features Increase System Reliability * LED Short-to-Battery, Short-to-Ground Protection * LED String Open Protection * Thermal Protection * Fault Diagnosis through Fault Flag * Automotive Ready * -40°C to +125°C Operating Temperature Range * AEC-Q100 Qualified

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