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MP1519 - High Efficiency Charge Pump 4 White LED Driver

General Description

The MP1519 is a fully automatic driver for powering four white LEDs, with up to 4V forward voltage, from a single Li-Ion or three NiMH cells.

The driver performs all of the sensing and control to run the LEDs at an optimum charge pump ratio for efficiency without an expensive inductor.

Key Features

  • 2% LED Current Matching.
  • High Efficiency (>93%).
  • Current Source Outputs.
  • No Ballast Resistors Required.
  • 1x, 1.5x and 2x Automatic Modes.
  • Constant Frequency Operation.
  • Automatic LED Detection.
  • High and Low Frequency PWM Capability.
  • 2.5V to 5.5V Operation.
  • Less than 1μA Leakage during Shutdown.
  • Detects Changes in Battery Level.
  • No External Schottky Diode Required.
  • Soft-Start and So.

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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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TM MP1519 1x, 1.5x, 2x High Efficiency Charge Pump 4 White LED Driver The Future of Analog IC Technology TM DESCRIPTION The MP1519 is a fully automatic driver for powering four white LEDs, with up to 4V forward voltage, from a single Li-Ion or three NiMH cells. The driver performs all of the sensing and control to run the LEDs at an optimum charge pump ratio for efficiency without an expensive inductor. The driver allows PWM operation to support brightness control. The tiny 3mm x 3mm QFN16 package and small external capacitors allow for the most compact white LED solution available. EVALUATION BOARD REFERENCE Board Number EV0042 Dimensions 2.4”X x 1.9”Y x 0.