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HT7939 - High Current and Performance White LED Driver

Description

The HT7939 is a high efficiency boost converter for driving White LEDs using current mode operation.

The device is designed to drive up to 39 White LEDs from a 5V power supply.

Features

  • Input range from 2.6V~5.5V.
  • Built-in Power MOSFET.
  • Can drive up to 39 White LEDs with a 5V input.
  • Low standby current: 0.1mA (typ. ) with VEN low.
  • Integrated Over-voltage, Over-temperature and.
  • Under voltage lock-out protection.
  • 1.2MHz fixed switching frequency.
  • High efficiency - up to 90%.
  • 6-pin SOT23-6 package Over-current protection circuits.

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Full PDF Text Transcription

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HT7939 High Current and Performance White LED Driver Features · Input range from 2.6V~5.5V · Built-in Power MOSFET · Can drive up to 39 White LEDs with a 5V input · Low standby current: 0.1mA (typ.) with VEN low · Integrated Over-voltage, Over-temperature and · Under voltage lock-out protection · 1.2MHz fixed switching frequency · High efficiency - up to 90% · 6-pin SOT23-6 package Over-current protection circuits Applications · Display Backlighting · LED lighting Automatic DVD player Digital photo frame Handheld computer General Description The HT7939 is a high efficiency boost converter for driving White LEDs using current mode operation. The device is designed to drive up to 39 White LEDs from a 5V power supply.
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