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MAX1739 - Wide Brightness Range CCFL Backlight Controllers

General Description

The MAX1739/MAX1839 fully integrated controllers are optimized to drive cold-cathode fluorescent lamps (CCFLs) using the industry-proven Royer oscillator inverter architecture.

The Royer architecture provides near sinusoidal drive waveforms over the entire input range to maximize the life of CCFLs.

Key Features

  • MAX1739/MAX1839† Ordering Information PART MAX1739EEP MAX1839EEP TEMP. RANGE -40°C to +85°C -40°C to +85°C PIN-.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1755; Rev 1; 3/01 Wide Brightness Range CCFL Backlight Controllers General Description The MAX1739/MAX1839 fully integrated controllers are optimized to drive cold-cathode fluorescent lamps (CCFLs) using the industry-proven Royer oscillator inverter architecture. The Royer architecture provides near sinusoidal drive waveforms over the entire input range to maximize the life of CCFLs. The MAX1739/ MAX1839 optimize this architecture to work over a wide input voltage range, achieve high efficiency, and maximize the dimming range. The MAX1739/MAX1839 monitor and limit the transformer center-tap voltage when required. This ensures minimal voltage stress on the transformer, which increases the operating life of the transformer and eases its design requirements.