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TPS2398DGKG4 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS2398DGKG4 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 28 page TPS2398 TPS2399 SLUS562A − JUNE 2003 − REVISED SEPTEMBER 2003 3 www.ti.com ELECTRICAL CHARACTERISTICS VI(−VIN) = −48 V with respect to RTN, VI(EN) = 2.8 V, VI(ISENS) = 0, all outputs unloaded, TA = −40_C to 85_C (unless otherwise noted)(1)(2) input supply PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ICC1 Supply current, RTN VI(RTN) = 48 V 700 1000 µA ICC2 Supply current, RTN VI(RTN) = 80 V 1000 1500 µA VUVLO_L UVLO threshold, input voltage rising To GATE pull-up, referenced to RTN −36 −30 −25 V VHYS UVLO hysteresis 1.8 2.3 3.0 V enable input (EN) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VTH Threshold voltage, input voltage rising To GATE pull-up 1.3 1.4 1.5 V VHYS_EN EN hysteresis 22 60 90 mV IIH High-level input current VI(EN) = 5 V −2 1 2 µA linear current amplifier (LCA) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOH High-level output, GATE VI(ISENS) = 0 V 11 14 17 V ISINK Output sink current VI(ISENS) = 80 mV, VO(GATE) = 5V, Fault mode 50 100 mA II Input current, ISENS 0 V < VI(ISENS) < 0.2 V −1 1 µA VREF_K Reference clamp voltage VO(IRAMP) = open 33 40 46 mV VIO Input offset voltage VO(IRAMP) = 2 V −7 6 mV ramp generator PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ISRC1 IRAMP source current, slow turn-on rate VO(IRAMP) = 0.25 V −850 −600 −400 nA ISRC2 IRAMP source current, normal rate VO(IRAMP) = 1 V, 3 V −11 −10 −9 µA VOL Low-level output voltage VI(EN) = 0 V 5 mV AV Voltage gain, relative to ISENS VO(IRAMP) = 1 V, 3 V 9.5 10.0 10.5 mV/V overload comparator PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VTH_OL Current overload threshold, ISENS 80 100 120 mV tDLY Glitch filter delay time VI(ISENS) = 200 mV 2 4 7 µs fault timer PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOL Low-level output voltage VI(EN) = 0 V 5 mV ICHG Charging current, current limit mode VI(ISENS) = 80 mV, VO(FLTTIME) = 2 V −55 −50 −45 µA VFLT Fault threshold voltage 3.75 4.00 4.25 V IDSG Discharge current, retry mode TPS2399 VI(ISENS) = 80 mV, VO(FLTTIME) = 2 V 0.38 0.75 µA D Output duty cycle TPS2399 1 1.5 % IRST Discharge current, timer reset mode VO(FLTTIME) = 2 V,VI(ISENS) = 0 V 1 mA NOTES 1: All voltages are with respect to the −VIN terminal unless otherwise stated. 2: Currents are positive into and negative out of the specified terminal. |
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