IRS25751LTRPBF

IRS25751LPBF HVICTM High-Voltage Start-Up IC Features            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. 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 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 1 CVCC R1 VCC (-) COM 2 R2 VTH 3 VIN IRS25751 From AUX Supply 5 ENN 4 DC Bus (-) Ordering Information Standard Pack Base Part Number Package Type IRS25751LPBF 5L-SOT-23 1 www.irf.com © 2015 International Rectifier Form Quantity Tape and Reel 3000 Orderable Part Number IRS25751LTRPBF January 15, 2015 IRS25751LPBF Functional Block Diagram High-Voltage DC Bus DAUX IREG VOUT (+) VIN 1 VCC Auxiliary Supply CVCC 5 20.8V R1 COM (-) ON/OFF 4.2V ON 2 OFF R2 Logic OFF OTP 1.14V OFF VTH ENN 3 4 1.2V 2 www.irf.com © 2015 International Rectifier January 15, 2015 IRS25751LPBF Timing Diagram (VIN, IOUT, VOUT) VIN VBUS t IOUT IREG t VOUT VOUT+ VOUTt ON 3 www.irf.com OFF © 2015 International Rectifier ON OFF (auxiliary VCC supply takes over) January 15, 2015 IRS25751LPBF Qualification Information† Qualification Level Moisture Sensitivity Level Machine Model ESD Human Body Model IC Latch-Up Test RoHS Compliant Industrial†† (per JEDEC JESD 47E) Comments: This family of ICs has passed JEDEC’s Industrial qualification. IR’s Consumer qualification level is granted by extension of the higher Industrial level. MSL1††† SOT-23 (per IPC/JEDEC J-STD-020C) Class B (per JEDEC standard EIA/JESD22-A115-A) Class 2 (per EIA/JEDEC standard JESD22-A114-B) Class I, Level A (per JESD78A) Yes † †† Qualification standards can be found at International Rectifier’s web site http://www.irf.com/ Higher qualification ratings may be available should the user have such requirements. Please contact your International Rectifier sales representative for further information. ††† Higher MSL ratings may be available for the specific package types listed here. Please contact your International Rectifier sales representative for further information. 4 www.irf.com © 2015 International Rectifier January 15, 2015 IRS25751LPBF Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any pin. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. Symbol VIN Min. VIN pin voltage VOUT † Definition VTH pin voltage ENN ENN pin voltage RΘja Thermal resistance, junction to ambient Units 625 † VOUT pin voltage VTH Max. VCLAMP -0.3 V VOUT + 0.3 5L-SOT-23 TJ Junction temperature TS Storage temperature TL IC Pin temperature (soldering, 10 seconds) --- 191 -55 150 ºC/W ºC --- 300 This IC contains voltage clamp structures between the VOUT and COM pins that has a nominal breakdown voltage of 20.8V. Please note that this pin should not be driven by a DC, low impedance power source greater than the VCLAMP specified in the Electrical Characteristics section. 5 www.irf.com © 2014 International Rectifier November 18, 2014 IRS25751LPBF Recommended Operating Conditions For proper operation the device should be used within the recommended conditions. Symbol VIN VOUT Definition VIN pin voltage VTH pin voltage VENN ENN pin voltage 6 Max. -0.3 480 VOUT pin voltage VTH TJ Min. Junction temperature www.irf.com © 2014 International Rectifier VCLAMP COM -40 Units V VOUT 125 ºC November 18, 2014 IRS25751LPBF Recommended Component Values Symbol Component Min. Typ. Max. Units R1 VTH pin programming resistor --- 1.0 --- Meg Ohm R2 VTH pin programming resistor --- 90.9 --- K Ohm VOUT pin external capacitor --- 10.0 --- F CVCC 7 www.irf.com © 2015 International Rectifier January 15, 2015 IRS25751LPBF Electrical Characteristics R1 = 1Meg Ohm, R2 = 90.9K Ohm, Ta = 25 °C unless otherwise specified. All parameters are referenced to COM pin. Symbol Definition Min Typ Max Units Test Conditions VOUT pin falling turn-on threshold 3.78 4.2 4.62 VOUT pin internal clamp voltage 19.8 20.8 21.8 V VIN = COM, IVOUT = 5mA --- 4.6 --- mA VIN = 400V, VOUT = COM --- 2.5 --- A VIN = 400V 1.08 1.14 1.2 V --- 1.2 --- V VOUT Pin Characteristics VOUTVCLAMP IREG Regulated output current VIN Pin Characteristics I_VIN_OFF VIN pin off-state leakage current VTH Pin Characteristics VTH+ VTH pin rising turn-off threshold ENN Pin Characteristics VENN+ ENN pin rising disable threshold Over-Temperature Protection TjSD Junction temperature thermal shutdown --- 155 --- TjSD_HYS Junction temperature thermal shutdown hysteresis --- 50 --- 8 www.irf.com © 2015 International Rectifier ºC January 15, 2015 IRS25751LPBF Pin Definitions Pin Name Description 1 VOUT Output voltage and current 2 COM IC ground 3 VTH Programmable upper VOUT turn-off threshold input 4 ENN Enable pin (high level disables IC) 5 VIN High-voltage input Pin Assignments VOUT VIN IRS25751 1 COM 2 VTH 3 5 ENN 4 5-Lead SOT 23 9 www.irf.com © 2015 International Rectifier January 15, 2015 IRS25751LPBF Package Details: 5-Pin SOT23 10 www.irf.com © 2015 International Rectifier January 15, 2015 IRS25751LPBF Tape and Reel Details: 5-Pin SOT23 11 www.irf.com © 2015 International Rectifier January 15, 2015 IRS25751LPBF Tape and Reel Details: 5-Pin SOT23 12 www.irf.com © 2015 International Rectifier January 15, 2015 IRS25751LPBF Part Marking Information: 5-Pin SOT23 Top Marking Bottom Marking C The information provided in this document is believed to be accurate and reliable. However, International Rectifier assumes no responsibility for the consequences of the use of this information. International Rectifier assumes no responsibility for any infringement of patents or of other rights of third parties which may result from the use of this information. No license is granted by implication or otherwise under any patent or patent rights of International Rectifier. The specifications mentioned in this document are subject to change without notice. This document supersedes and replaces all information previously supplied. For technical support, please contact IR’s Technical Assistance Center http://www.irf.com/technical-info/ WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 13 www.irf.com © 2015 International Rectifier January 15, 2015