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MAX20070 - Integrated TFT Power Supplies and LED Backlight Drivers

Description

The MAX20070/MAX20070B are highly integrated power supplies and LED backlight drivers for automotive TFT-LCD applications.

Features

  • Integrates Both TFT Power Supplies and LED Backlight Driver in One IC, Reducing Component Count.
  • Alleviates EMI Due to Spread Spectrum on Both Source Driver Supplies and LED Driver.
  • 10000:1 Dimming Ratio at 200Hz Dimming Frequency.
  • Available in a 32-Pin (5mm x 5mm) TQFN with an Exposed Pad for Heat Dissipation and Operates Over the -40°C to +105°C Ambient Temperature Range Ordering Information appears at end of data sheet. Simplified Operating Circuit D3.

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Full PDF Text Transcription (Reference)

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MAX20070/MAX20070B EVALUATION KIT AVAILABLE Integrated TFT Power Supplies and LED Backlight Drivers General Description The MAX20070/MAX20070B are highly integrated power supplies and LED backlight drivers for automotive TFT-LCD applications. The devices integrate one buckboost converter, one boost converter, two gate-driver supplies, and a boost/SEPIC converter that can power one to two strings of LEDs in the display backlight. The source-driver power supplies consist of a boost converter and an inverting buck-boost converter that can generate voltages up to +15V and -15V. Both sourcedriver power supplies can deliver up to 100mA. The positive source-driver supply regulation voltage (VPOS) is set by connecting an external resistor-divider on FBP.
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