IRS25751LTRPBF

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. Additional features include programmability of the upper turn-off threshold, an ENN input, and overtemperature protection. IR’s proprietary HVIC technology provides robust operation from high input voltage levels with simple yet flexible 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