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HM3348 - Boost LED Driver

General Description

The H0 is a step-up DC/DC converter with a constant current to drive white LEDs or similar.

The device can drive up to eight LEDs in series from a Li-Ion cell.

Key Features

  • Input Voltage Range: 2.2V to 6V.
  • Programmable LED Current.
  • Drives LEDs up to 27V.
  • Switching Frequency: up to 800kHz.
  • Wide Dimming Frequency Range: 20kHz to 360kHz.
  • Programmable Overvoltage Protection.
  • Tiny SOP8/PP Package.

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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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Boost LED Driver Features  Input Voltage Range: 2.2V to 6V  Programmable LED Current  Drives LEDs up to 27V  Switching Frequency: up to 800kHz  Wide Dimming Frequency Range: 20kHz to 360kHz  Programmable Overvoltage Protection  Tiny SOP8/PP Package Applications  PDA  Cellular Phones  Handheld Devices  MP3 Players  GPS Receivers Description The H0 is a step-up DC/DC converter with a constant current to drive white LEDs or similar. The device can drive up to eight LEDs in series from a Li-Ion cell. The LED current is set by the external resistor (RSET) and is directly regulated by the feedback (FB) voltage (typ: 200mV) across the external resistor RSET.