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IS31LT3938 - High Voltage LED Lighting Driver

General Description

IS31LT3938 LED driver IC is a peak current detection buck converter which operates in constant off time mode.

It operates over a very wide input voltage supply range of 10VDC to 450VDC or 110VAC/220VAC.

Key Features

  • User configurable power sequencing levels.
  • 3% output current accuracy.
  • Over current, temperature protection and short circuit protection.
  • High efficiency (typical up to 95%).
  • Higher MOS drive voltage.
  • Wide input voltage range: 10VDC~450VDC or 85Vac~ 265Vac.
  • Linear and PWM dimming.
  • Very few external components.

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📁 Similar Datasheet

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Other Datasheets by ISSI (now Infineon)

Part Number Description
IS31LT3932 High PF universal LED Driver
IS31LT3935 TRIAC Dimmable AC/DC LED Driver
IS31LT3910 UNIVERSAL HIGH BRIGHTNESS LED DRIVER
IS31LT3916 Offline LED driver
IS31LT3918 HIGH VOLTAGE LED LIGHTING DRIVER

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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IS31LT3938 Preliminary Features  User configurable power sequencing levels  3% output current accuracy  Over current, temperature protection and short circuit protection  High efficiency (typical up to 95%)  Higher MOS drive voltage  Wide input voltage range: 10VDC~450VDC or 85Vac~ 265Vac  Linear and PWM dimming  Very few external components Applications  DC/DC or AC/DC constant current LED driver  Signal and decorative lighting  Backlight LED driver High Voltage LED Lighting Driver with Three Level Power Sequencing General Description IS31LT3938 LED driver IC is a peak current detection buck converter which operates in constant off time mode. It operates over a very wide input voltage supply range of 10VDC to 450VDC or 110VAC/220VAC.