MAX20069CGTL/V+

MAX20069CGTL/V+ is a highly integrated automotive I²C-controlled 4-channel 150mA TFT power supply and LED backlight driver IC for automotive TFT-LCD applications. The IC integrates one buck-boost converter, one boost converter, two gate-driver supplies, and a boost/SEPIC converter that can power one to four strings of LEDs in the display backlight. The IC features a quad-string LED driver that operates from a separate input voltage (VBATT) and can power up to four strings of LEDs with 150mA (max) of current per string. The IC features logic-controlled pulse-width-modulation (PWM) dimming, with minimum pulse widths as low as 500ns with the option of phase shifting the LED strings with respect to one another. Typical applications are automotive dashboards, automotive central, information displays, automotive head up displays, automotive navigation systems.

• Positive and negative 3mA gate voltage regulators with adjustable output voltage
• Flexible resistor-programmable sequencing through the SEQ pin
• Undervoltage detection on all outputs, low-quiescent-current standby mode
• 4-channel LED backlight driver, up to 150mA current per channel
• 10000:1 dimming ratio at 200Hz
• Open-string, shorted-LED and short-to-GND diagnostics
• Low EMI, phase-shift dimming of LED strings, overload and thermal protection
• Spread spectrum on LED driver and TFT, selectable switching frequency
• I²C interface for control and diagnostics, fault indication through the FLTB pin and I²C
• 40-pin TQFN-EP package, -40°C to +105°C temperature range

Notes

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