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MP3924 Datasheet(PDF) 9 Page - Monolithic Power Systems |
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MP3924 Datasheet(HTML) 9 Page - Monolithic Power Systems |
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9 / 56 page  MP3924 – QUAD-PORT IEEE 802.3AF/AT PSE CONTROLLER MP3924 Rev. 1.0 MonolithicPower.com 9 7/16/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS (continued) VIN = 54V, PGND, DGND, SGND1, and SGND2 are connected together, RSENSE = 0.25Ω, TJ = -40°C to +125°C (6), typical value is tested at TJ = 25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Gate Driver GATE source capability ISOURCE Port start-up, VGATE = GND -43 µA GATE sink capability ISINK Port shutdown, VGATE = 10V 60 µA Port shutdown, VGATE < 1V 9 mA Trigger SCP, VSENSE = 450mV, VGATE = 5V (7) 100 mA GATE clamp voltage VGS_MAX Float GATE pin 10 V OUT Pin OUT pin resistance ROUT Between VIN and OUTx, pull OUTx high in idle state (detection/classification off, port shutdown) 0.2 MΩ OUT pin bias current IOUT OUTx = 0V, port start-up -270 µA OUTx = 54V, port shutdown 1 µA Protection Output power good (PG) rising threshold VPG OUTx pin voltage decrease 1.5 2 2.5 V Output PG hysteresis VPG_HYS 400 mV PG delay Low to high deglitch 3 ms High to low deglitch 10 µs Current limit threshold VILIM Class 0~3, ILIMx bit = 0 101 106.25 111.5 mV Class 4, ILIMx bit = 1 201 212.5 224 mV Class 5, ILIMx bit = 1 251.75 265 278.25 mV Over-current (OC) detection threshold VCUT Class 0~3 (ICUTx = 000) 89.06 93.75 98.44 mV Class 4 (ICUTx = 100) 154.38 162.5 170.63 mV Class 5 (ICUTx = 101) 218.5 230 241.5 mV Current limit timer tILIM TILIM = 11 50 60 70 ms OC timer tICUT TCUT = 10 50 60 70 ms Start inrush current limit timer tINRUSH TINRUSH = 10 50 60 70 ms Foldback initial voltage VFOLD_ST OUTx pin voltage when ILIM decreases, ILIMx bit = 0 32 V OUTx pin voltage when ILIM decreases, ILIMx bit = 1 18 V Foldback end voltage VFOLD_END OUTx pin voltage when ILIM decreases to minimum value 46 V Foldback minimum current limit VLIM_MIN Short VIN to OUTx, FBLIMT bit = 1, Class 4 40 mV Short VIN to OUTx, FBLIMT bit = 0, Class 4 22 mV |
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