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TPS40490MHRHDT Fiches technique(PDF) 9 Page - Texas Instruments |
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TPS40490MHRHDT Fiches technique(HTML) 9 Page - Texas Instruments |
9 / 38 page TPS40490 www.ti.com SLVSCB4 – OCTOBER 2013 ELECTRICAL CHARACTERISTICS (continued) TJ = –40°C to 150°C, VIN = 48 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS OVERCURRENT PROTECTION (LOW-SIDE MOSFET SENSING) ILIM_PIN ILIM pin voltage 5 V < VIN < 60 V, TJ = 25°C 1.23 V Temperature coefficient of ILIM ILIM_Tc 5 V < VIN < 60 V 25 ppm current THERMAL SHUTDOWN TTRIP Thermal S/D trip point Rising temperature 160 °C THYST Thermal S/D hysteresis Device re-starts 140 °C TTRIP_DEGLITCH Thermal S/D deglitch 110 µS POWER GOOD Output falling 80 % VUVBUCKX Under voltage threshold Output rising (PGOOD asserted) 90 % tBUCKUV_deglitch Deglitch time Both edges 110 us tVINUV_deglitch Deglitch time Both edges 110 us tON_HICCUP Hiccup mode ON time VUVBUCKX asserted 10 ms Converter disabled. Once tOFF_HICCUP elapses, converter tOFF_HICCUP Hiccup mode OFF time 100 ms will go through start-up again Threshold voltage for buck OVP % VOVBUCKX Output rising (high side FET will be forced off) 114 % of Vset Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TPS40490 |
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