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IRS25751LPBF - High-Voltage Start-Up

General Description

The IRS25751 is a 480V high-voltage start-up IC ideal for supplying initial supply starting current from a high-voltage bus.

The IRS25751 supplies a constant current during start-up and then consumes ultra-low standby (off) current.

Key Features

  • Up to 480V voltage capability.
  • Constant output current (4.5mA).
  • Programmable upper threshold level.
  • Fixed lower threshold (4.2V).
  • ENN input.
  • Over-temperature shutdown.
  • Ultra-low off current (2.5µA).
  • Internal 20.8V clamp on VOUT pin.
  • Excellent latch immunity on all inputs & outputs.
  • Integrated ESD protection on all pins.
  • 5-pin SOT-23 package.

📥 Download Datasheet

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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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HVICTM Features  Up to 480V voltage capability  Constant output current (4.5mA)  Programmable upper threshold level  Fixed lower threshold (4.2V)  ENN input  Over-temperature shutdown  Ultra-low off current (2.5µA)  Internal 20.8V clamp on VOUT pin  Excellent latch immunity on all inputs & outputs  Integrated ESD protection on all pins  5-pin SOT-23 package Applications  High-voltage start-up  Low standby power circuits  General purpose switched mode power electronics Application Diagram IRS25751LPBF High-Voltage Start-Up IC Description The IRS25751 is a 480V high-voltage start-up IC ideal for supplying initial supply starting current from a high-voltage bus. The IRS25751 supplies a constant current during start-up and then consumes ultra-low standby (off) current.