IRS25751LTRPBF Infineon

IRS25751LPBF TM HVIC High-Voltage Start-Up IC Features Description The IRS25751 is a 480V high-voltage start-up Up to 480V voltage capability IC ideal for supplying initial supply starting current Constant output current (4.5mA) from a high-voltage bus. The IRS25751 supplies Programmable upper threshold level a constant current during start-up and then Fixed lower threshold (4.2V) consumes ultra-low standby (off) current. ENN input Additional features include programmability of the Over-temperature shutdown upper turn-off threshold, an ENN input, and over- Ultra-low off current (2.5A) temperature protection. IRs proprietary HVIC Internal 20.8V clamp on VOUT pin technology provides robust operation from high Excellent latch immunity on all inputs & outputs input voltage levels with simple yet flexible Integrated ESD protection on all pins features. 5-pin SOT-23 package Package Options Applications High-voltage start-up Low standby power circuits General purpose switched mode power electronics 5-Pin SOT-23 Application Diagram DC Bus (+) VCC (+) VOUT VIN From AUX 1 5 Supply CVCC R1 COM VCC (-) 2 R2 VTH ENN 3 4 DC Bus (-) Ordering Information Standard Pack Base Part Number Package Type Orderable Part Number Form Quantity IRS25751LPBF 5L-SOT-23 Tape and Reel 3000 IRS25751LTRPBF 1 www.irf.com 2015 International Rectifier January 15, 2015 IRS25751 IRS25751LPBF Functional Block Diagram High-Voltage DC Bus DAUX IREG VOUT VIN (+) 1 5 VCC 20.8V CVCC R1 ON/OFF Auxiliary Supply COM 4.2V ON (-) 2 OFF Logic OTP OFF R2 1.14V OFF VTH ENN 3 4 1.2V 2 www.irf.com 2015 International Rectifier January 15, 2015