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LTC3490 - Single Cell 350mA LED Driver

Features

  • 350mA Constant Current Output.
  • 2.8V to 4V Output Compliance.
  • 1- or 2-Cell NiMH or Alkaline Input.
  • Synchronous Rectification: Up to 90% Efficiency.
  • Fixed Frequency Operation: 1.3MHz.
  • Low Quiescent Current:.

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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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U U LTC3490 Single Cell 350mA LED Driver FEATURES ■ 350mA Constant Current Output ■ 2.8V to 4V Output Compliance ■ 1- or 2-Cell NiMH or Alkaline Input ■ Synchronous Rectification: Up to 90% Efficiency ■ Fixed Frequency Operation: 1.3MHz ■ Low Quiescent Current: <1mA ■ Very Low Shutdown Current: <50µA ■ Open LED Output Limited to 4.7V ■ VIN Range: 1V to 3.2V ■ Dimming Control ■ Undervoltage Lockout to Protect Batteries ■ Low Profile (0.75mm) 3mm × 3mm Thermally Enhanced 8-Lead DD and S8 Packages U APPLICATIO S ■ Portable Lighting ■ Rechargeable Flashlights DESCRIPTIO The LTC®3490 provides a constant current drive for 1W LED applications.
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