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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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TPS57140QDGQRQ1 데이터시트(PDF) 6 Page - Texas Instruments |
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TPS57140QDGQRQ1 데이터시트(HTML) 6 Page - Texas Instruments |
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6 / 53 page  6 TPS57140-Q1 SLVSAP3D – DECEMBER 2010 – REVISED FEBRUARY 2016 www.ti.com Product Folder Links: TPS57140-Q1 Submit Documentation Feedback Copyright © 2010–2016, Texas Instruments Incorporated Electrical Characteristics (continued) TJ = –40°C to 150°C, VIN = 3.5 to 42 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CURRENT LIMIT Current-limit threshold VIN = 12 V, TJ = 25°C 1.8 2.7 A THERMAL SHUTDOWN Thermal shutdown 182 °C TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN) Switching-frequency range using RT mode VIN = 12 V 100 2500 kHz fSW Switching frequency VIN = 12 V, RT = 200 kΩ 450 581 720 kHz Switching-frequency range using CLK mode VIN = 12 V 300 2200 kHz Minimum CLK pulse duration 40 ns RT/CLK high threshold VIN = 12 V 1.9 2.2 V RT/CLK low threshold VIN = 12 V 0.45 0.7 V RT/CLK falling-edge to PH rising-edge delay Measured at 500 kHz with RT resistor in series 60 ns PLL lock in time Measured at 500 kHz 100 μs SLOW START AND TRACKING (SS/TR) Charge current VSS/TR = 0.4 V 2 μA SS/TR-to-VSENSE matching VSS/TR = 0.4 V 45 mV SS/TR-to-reference crossover 98% nominal 1 V SS/TR discharge current (overload) VSENSE = 0 V, V(SS/TR) = 0.4 V 112 μA SS/TR discharge voltage VSENSE = 0 V 54 mV POWER GOOD (PWRGD PIN) PWRGDTH PWRGD switching threshold as % of the nominal VSENSE VSENSE falling (fault) 92 % of VSENSE VSENSE rising (good) 94 VSENSE rising (fault) 109 VSENSE falling (good) 107 Hysteresis VSENSE falling and rising 2 % of VSENSE Output-high leakage VSENSE = VREF, V(PWRGD) = 5.5 V, 25°C 10 nA On-resistance I(PWRGD) = 3 mA, VSENSE < 0.79 V 50 Ω Minimum VIN for defined output V(PWRGD) < 0.5 V, II(PWRGD) = 100 μA 0.95 1.5 V |
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