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LM3699 Datasheet High-efficiency White Led Driver

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & munity LM3699 SNVS821A – JANUARY 2014 – REVISED MARCH 2014 LM3699 High-Efficiency White LED Driver.

General Description

The LM3699 is a three-string, high-efficiency, PWMcontrolled power source for display backlight or keypad LEDs in smartphone handsets.

The highvoltage inductive boost converter with integrated 1-A, 40-V MOSFET provides the power for three series LED strings.

The boost output automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.

Key Features

  • 1 Drives Parallel High-Voltage LED Strings for Display or Keypad Lighting.
  • Boost Converter up to 90% Efficiency.
  • Four User-Selectable Full-Scale Current Settings (20.2 mA, 18.6 mA, 17.0 mA, 15.4 mA).
  • Quick-Dimming Enable Terminal (ILOW).
  • Simple PWM Duty Cycle Control.
  • 24-V Overvoltage Protection Threshold.
  • Fixed 1-MHz Switching Frequency.
  • Integrated 1-A/40-V MOSFET.
  • Three Current Sink Terminals.
  • Adaptive Bo.

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LM3699 Distributor