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TPS2544RTER Datasheet(PDF) 4 Page - Texas Instruments |
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TPS2544RTER Datasheet(HTML) 4 Page - Texas Instruments |
4 / 33 page TPS2544 SLVSBU8A – FEBRUARY 2013 – REVISED FEBRUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Unless otherwise noted: –40 ≤ TJ ≤ 125°C, 4.5V ≤ VIN ≤ 5.5 V, VEN = VIN, VILIM_SEL = VIN, VCTL1 = VCTL2 = VCTL3 = VIN. R FAULT = 10 k Ω, RILIM_HI = 20 kΩ, RILIM_LO = 80.6 kΩ. Positive currents are into pins. Typical values are at 25°C. All voltages are with respect to GND. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT EN, ILIMSEL, CTL1, CTL2, CTL3 INPUTS Input pin rising logic threshold 1 1.35 1.70 V voltage Input pin falling logic threshold 0.85 1.15 1.45 voltage Hysteresis(2) 200 mV Input current Pin voltage = 0 V or 5.5 V –0.5 0.5 µA ILIMSEL CURRENT LIMIT VILIM_SEL = 0 V, RILIM_LO = 210 kΩ 205 240 275 VILIM_SEL = 0 V, RILIM_LO = 80.6 kΩ 575 625 680 IOS OUT short circuit current limit(3) VILIM_SEL = 0 V, RILIM_LO = 22.1 kΩ 2120 2275 2430 mA VILIM_SEL = VIN, RILIM_HI= 20 kΩ 2340 2510 2685 VILIM_SEL = VIN, RILIM_HI = 16.9 kΩ 2770 2970 3170 Response time to OUT short- VIN = 5.0 V, R = 0.1Ω, lead length = 2 inches (see tIOS 1.5 µs circuit(2) Figure 24) SUPPLY CURRENT IIN_OFF Disabled IN supply current VEN = 0 V, VOUT = 0 V, –40 ≤ TJ ≤ 85°C 0.1 2 µA VCTL1 = VCTL2 = VIN, VCTL3 = 0 V, VILIM_SEL = 0 V 165 220 VCTL1 = VCTL2 = VCTL3 = VIN, VILIM_SEL = 0 V 175 230 IIN_ON Enabled IN supply current VCTL1 = VCTL2 = VIN, VCTL3 = 0V, VILIM_SEL = VIN 185 240 µA VCTL1 = VCTL2 = VIN, VCTL3 = VIN, VILIM_SEL = VIN 195 250 VCTL1 = 0V, VCTL2 = VCTL3 = VIN 215 270 UNDERVOLTAGE LOCKOUT VUVLO IN rising UVLO threshold voltage 3.9 4.1 4.3 V Hysteresis(2) 100 mV FAULT Output low voltage I FAULT = 1 mA 100 mV Off-state leakage V FAULT = 5.5 V 1 µA Over current FAULT rising and 5 8.2 12 ms falling deglitch THERMAL SHUTDOWN Thermal shutdown threshold 155 Thermal shutdown threshold in 135 °C current-limit Hysteresis(2) 20 (2) These parameters are provided for reference only and do not constitute part of TI's published device specifications for purposes of TI's product warranty. (3) Pulse-testing techniques maintain junction temperature close to ambient temperature; Thermal effects must be taken into account separately. 4 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: TPS2544 |
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