The MAX20446 is a 6-channel backlight driver with boost controller for automotive displays. The integrated current outputs can sink up to 130mA LED current each. The device accepts a wide 4.5V to 36V input voltage range and withstands direct automotive load-dump events. The internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in the frequency range 400kHz to 2.2MHz. Integrated spread spectrum helps reduce EMI. An adaptive output-voltage control scheme minimizes power dissipation in the LED current-sink paths. The device features I2C-controlled pulse-width modulation (PWM) dimming and hybrid dimming. In either case the minimum pulse width is 500ns. Phase-shifted dimming of the strings is incorporated for lower EMI. Comprehensive diagnostic information is also available via the I2C interface. The MAX20446 is available in a TQFN package and operates in the -40°C to 125°C temperature range. Design Solution: Overcome the Design Challenges of New Automotive Display Backlights › Applications * Central Information Displays * Infotainment Displays * Instrument Clusters * Wide-Voltage-Range Operation * Operates Down to 4V Supply After Startup * Survives Load Dump Up to 52V * High Integration * Complete 6-Channel Solution Including Boost Controller * I2C Control for Minimum Parts Count * Robust and Low EMI * Spread-Spectrum Oscillator * Phase Shifting * 400kHz to 2.2MHz Switching-Frequency Range * Fail-Safe Operation Mode Using the FSEN Pin * Versatile Dimming Scheme Allows Hybrid or PWM-Only Dimming Using DIM Input or I2C * Dimming Ratio > 10000:1 Using Hybrid Dimming * 10000:1 Dimming Ratio at 200Hz using PWM Dimming * Complete Diagnostics * LED Open/Short Detection and Protection * Boost Output Undervoltage and Overvoltage * Boost Voltage * Individual String LED Current * Thermal Shutdown * Compact (4mm x 4mm) 24-Pin TQFN Package https://elecena.pl/product/22320744/automotive-6-channel-backlight-driver-with-boost-sepic-controller-and-ic-interface 2022-12-27 https://elecena.pl/product/22320744/automotive-6-channel-backlight-driver-with-boost-sepic-controller-and-ic-interface 2025-01-17