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The Nexperia NEX13120‑Q100 is a 12-channel high-side linear LED driver designed for automotive lighting systems. Each channel delivers up to 100 mA with 8-bit current resolution and ≤5% channel-to-channel accuracy (18–100 mA range), all while maintaining a low dropout voltage of approximately 600 mV at full current. It operates across a wide input range—from 4.5 V to 36 V for VBAT and 3.8 V to 36 V for VS—making it compatible with both 12 V and 24 V automotive architectures. The device is qualified to AEC‑Q100 Grade 1 standards with operating junction temperatures from –40 °C to 125 °C (–40 °C to 150 °C junction) and is housed in a thermally enhanced HTSSOP‑24 package suited for high-temperature environments. 
Dimming control is handled via independent 12-bit PWM generators per channel, programmable across a frequency range of 50 Hz to 23.4 kHz in linear or exponential response modes. This supports both gradual transitions and precision brightness control. Analog dimming is also supported, offering flexibility in lighting behavior. The device integrates memory for configuration (MTP), ensuring that current and dimming parameters persist even if communication is lost. 
Communication with a host controller is managed via a UART-over-CAN interface, enabling long-distance data exchange typical in exterior lighting systems where multiple lamp boards may be present. The interface supports up to 2 Mbit/s data rate and multiple (up to 27) selectable addresses, allowing multiple driver ICs to coexist on a shared network. Configurable failure-safe behavior transitions the outputs into predefined states if the link fails, essential for safety-critical lighting redundancy. 
From a diagnostics and protection standpoint, the NEX13120‑Q100 supports open-circuit detection, short-to-ground, and single-LED fault diagnostics. It includes undervoltage fault detection, a watchdog timer, CRC-checked data frames, fault reporting via a dedicated open-drain FLT pin, over-temperature protection, and ESD robustness (HBM > 2000 V, CDM > 500 V). These capabilities make the device suitable for automotive rear lights, headlights, and other exterior illumination applications—offering precise control, fault tolerance, and functional reliability for engineers designing automotive lighting systems. 
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