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MAX7533 - CCFL Backlight and LCD Contrast Controllers

General Description

The MAX753/MAX754 drive cold-cathode fluorescent lamps (CCFLs) and provide the LCD backplane bias (contrast) power for color or monochrome LCD panels.

These ICs are designed specifically for backlit note book-computer applications.

Key Features

  • o Drives Backplane and Backlight o 4V to 30V Battery Voltage Range o Low 500µA Supply Current o Digital or Potentiometer Control of CCFL Brightness and LCD Bias Voltage o Negative LCD Contrast (MAX753) o Positive LCD Contrast (MAX754) o Independent Shutdown of Backlight and Backplane Sections o 25µA Shutdown Supply Current MAX753/MAX754 ______________Ordering Information PART MAX753CPE MAX753CSE MAX753C/D MAX753EPE MAX753ESE MAX754CPE MAX754CSE MAX754C/D MAX754EPE MAX754ESE TEMP. RANGE 0°C to.

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Full PDF Text Transcription for MAX7533 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for MAX7533. For precise diagrams, and layout, please refer to the original PDF.

19-0197; Rev 1; 1/95 CCFL Backlight and LCD Contrast Controllers _______________General Description The MAX753/MAX754 drive cold-cathode fluorescent lamps (CCFLs) and pro...

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The MAX753/MAX754 drive cold-cathode fluorescent lamps (CCFLs) and provide the LCD backplane bias (contrast) power for color or monochrome LCD panels. These ICs are designed specifically for backlit note book-computer applications. Both the backplane bias and the CCFL supply can be shut down independently. When both sections are shut down, supply current drops to 25µA. The LCD contrast and CCFL brightness can be adjusted by clocking separate digital inputs or using external potentiometers. LCD contrast and backlight brightness settings are preserved in their respective counters while in shutdown. On power-up, the LCD contr

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