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LM3697 - High-efficiency three-string white LED driver

General Description

The LM3697 11-bit LED driver provides highperformance backlight dimming for 1, 2, or 3 series LED strings while delivering up to 90% efficiency.

Key Features

  • 1 Drives three parallel high-voltage led strings for display and keypad lighting.
  • High-voltage strings capable of up to 40-V output voltage and up to 90% efficiency.
  • Up to 30 mA per current sink.
  • 11-Bit configurable dimming resolution.
  • PWM input for content adjustable brightness control (CABC).
  • Fully configurable LED grouping and control.
  • Integrated 1-A/40-V MOSFET.
  • Adaptive boost output to LED voltages.
  • Selectable.

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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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Product Folder Order Now Technical Documents Tools & Software Support & Community LM3697 SNOSCS2D – NOVEMBER 2013 – REVISED MARCH 2019 LM3697 High-efficiency three-string white LED driver 1 Features •1 Drives three parallel high-voltage led strings for display and keypad lighting • High-voltage strings capable of up to 40-V output voltage and up to 90% efficiency • Up to 30 mA per current sink • 11-Bit configurable dimming resolution • PWM input for content adjustable brightness control (CABC) • Fully configurable LED grouping and control • Integrated 1-A/40-V MOSFET • Adaptive boost output to LED voltages • Selectable 500-kHz and 1-MHz switching frequency • Four configurable overvoltage protection thresholds (16 V, 24 V, 32 V, and 40 V) • Overcurrent protection • Thermal shutdown pr