MAX25069ATM/V+

MAX25069 is an automotive, highly integrated TFT power supply and LED backlight driver IC for automotive TFT-LCD applications. This IC integrates one boost converter, one inverting buck-boost converter, two gate-driver supplies, and a boost/SEPIC controller that can power 1 to 6 strings of LEDs in the display backlight. The source-driver power supplies consist of a boost converter which can provide up to +18V in unipolar mode and an inverting buck-boost converter that can generate a voltage down to -10.5V. The AVDD output can deliver up to 300mA at 13.5V, while NAVDD can provide up to 200mA. The positive source-driver supply-regulation voltage (VAVDD) is set using internal NV memory or through I²C. Application includes automotive dashboards, automotive central information displays, automotive head-up displays. automotive navigation systems.

• Flexible sequencing, undervoltage detection on all outputs
• Low-quiescent current standby mode
• Programmable nMOSFET current limit
• Adaptive voltage optimization to reduce power dissipation in the LED current sinks
• Open-string, shorted-LED, and short-to-GND diagnostics
• Phase-shift dimming of LED strings, spread spectrum on LED driver and TFT
• Selectable switching frequency
• Fault indication through the FLTB pin and I²C, nonvolatile configuration memory
• Overload and thermal protection, AEC-Q100 Grade 1 qualified
• 48 TQFN-EP package, temperature range from -40°C to +125°C

Notes

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