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MAX5952 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX5952 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 50 page High-Power, Quad, PSE Controller for Power-Over-Ethernet _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (AGND = 32V to 60V, VEE = 0V, VDD to DGND = +3.3V, all voltages are referenced to VEE, unless otherwise noted. Typical values are at AGND = +48V, DGND = +48V, VDD = (DGND + 3.3V), TA = +25°C. Currents are positive when entering the pin and negative otherwise.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CURRENT LIMIT IVEE = 00 202 212 220 IVEE = 01 192 202 212 IVEE = 10 186 190 200 Current-Limit Clamp Voltage VSU_LIM Maximum VSENSE_ allowed during current limit, VOUT_ = 0V (ICUT = 000) (Note 3) IVEE = 11 170 180 190 mV ICUT = 000 (Class 0/3) 177 186 196 ICUT =110 (Class 1) 47 55 62 ICUT = 111 (Class 2) 86 94 101 ICUT = 001 265 280 295 ICUT = 010 310 327 345 ICUT = 011 355 374 395 ICUT = 100 398 419 440 Overcurrent Threshold After Startup VFLT_LIM Overcurrent VSENSE_ threshold allowed for t ≤ tFAULT after startup; VOUT_ = 0V, (IVEE = 00) ICUT =101 443 466 488 mV ICUT = 000, ICUT = 110, ICUT = 111 28 Foldback Initial OUT_ Voltage VFLBK_ST VOUT_ - VEE, above which the current-limit trip voltage starts folding back, IVEE = 00 ICUT = 001…101 10 V Foldback Final OUT_ Voltage VFLBK_END IVEE = 00, ICUT = 000, VOUT - VEE above which the current-limit trip voltage reaches VTH_FB 50 V Minimum Foldback Current-Limit Threshold VTH_FB VOUT_ = AGND = 60V, IVEE = 00, ICUT = 000 64 mV SENSE_ Input Bias Current VSENSE_ = VEE -2 +2 µA |
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