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TPS51020DBTR Datasheet(PDF) 4 Page - Texas Instruments |
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TPS51020DBTR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 27 page TPS51020 SLUS564B − JULY 2003 − REVISED DECEMBER 2003 4 www.ti.com ELECTRICAL CHARACTERISTICS (continued) TA = −40°C to 85°C, 4.5 V < VIN < 20 V, CVIN = 0.1 µF, CVREG5 = 2.2 µF, CREF_X = 0.01 µF, PGOOD = 0.2 V, ENBLx = DDR = VIN, INVx = COMPx, RSSTRTx = OPEN, TRIP1 = TRIP2 = VIN, LLx = GND, VBSTx = LLx+5, C(OUTx_U, OUTx_D)=1 nF, REG5_IN = 0V, GND = OUTGNDx = 0 V, VO1_VDDQ = VO2 = 0 V (unless otherwise stated) PARAMETER UNIT MAX TYP MIN TEST CONDITIONS REF_X REFERENCE VOLTAGE VREF10 10-V reference voltage VIN = 14 V, IOUT = 0 A 8.5 10.0 11.0 V VLD10 Load regulation 0 mA ≤ IOUT ≤ 2 mA, VIN = 18 V -12% -20% VLN10 Line regulation IOUT = 100 µA, 14 V ≤VIN ≤28 V 5% VREFVTT VTT reference voltage DDR = 0 V wrt VO1_VDDQ input divided by 2 VVO1 = 2.5 V 1.5% VREFVTT VTT reference load regulation 0 mA ≤ IO ≤ 3 mA 0.75% POWERGOOD COMPARATORS VTHDUAL(PG) PGOOD threshold (dual mode) Undervoltage PGOOD 765 786 808 mV VTHDUAL(PG) PGOOD threshold (dual mode) Overvoltage PGOOD 892 920 945 mV VTHDDR(PG) PGOOD threshold (DDR) Undervoltage PGOOD, VO1_VDDQ = 2.5 V 1.12 1.14 1.16 V VTHDDR(PG) PGOOD threshold (DDR) Overvoltage PGOOD, VO1_VDDQ = 2.5 V 1.28 1.31 1.33 V TPG(del) PGOOD delay time INVx > undervoltage PGOOD, Delay time from SSTRTx > 1.5 V to PGOOD going high 2048 clks DIGITAL CONTROL INPUTS VIH High-level input voltage, logic DDR, ENBL1, ENBL2, SKIP 2.2 V VIL Low-level input voltage, logic DDR, ENBL1, ENBL2, SKIP 0.3 V IINLEAK Logic input leakage current DDR, ENBL1, ENBL2, SKIP= 5 V |1.0| µA VO1_VDDQ and VO2 RVOUT VOx sink impedance VVOUTx = 0.5 V, fault engaged 6 10 Ω VVOUTOK VOx low restart voltage Fault condition removed, restart 0.25 0.32 0.40 V VVO2LEAK VOx input leakage current DDR= VIN, VOx = 5 V |1.0| µA RVOUT VO1_VDDQ input impedance DDR= 0 1.5 M Ω UNDERVOLTAGE AND OVERVOLTAGE PROTECTION VOVPDUAL OVP trip output threshold (dual) Sensed at INVx 945 970 1010 mV VOVPDDR OVP trip output threshold (DDR) VO1_VDDQ = 2.5 V 1.31 1.36 1.41 V TOVP(del) OVP propagation delay time(1) 20 µs VUVPDUAL UVP trip output threshold (dual) Sensed at INVx 510 553 595 mV VUVPDDR UVP trip output threshold (DDR) VO1_VDDQ = 2.5 V 750 813 875 mV TUVP(del) UVP propagation delay time 4096 clks OVERCURRENT and INPUT VOLTAGE UVLO PROTECTION ITRIPSNK TRIPx sink current VTRIPx = VIN − 100 mV, TA = 25°C 11 13 15 A ITRIPSRC TRIPx source current VTRIPx = 100 mV, TA = 25°C 10 13 16 µA TCITRIP TRIP current temperature coeficient(1) TA = 25°C 4200 ppm/ °C VOCPHI High-level OCP comparator offset voltage(1) 0 |3.0| mV VOCPLO Low-level OCP comparator offset voltage(1) 0 |5.0| mV VVINUVLO VIN UVLO trip threshold REF5V_IN = 4.8 V 3.7 3.9 4.1 V VVINHYS VIN UVLO trip hysteresis 100 200 300 mV |
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