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TPS7B4254QDDARQ1 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS7B4254QDDARQ1 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 26 page 5 TPS7B4254-Q1 www.ti.com SLVSDI1B – APRIL 2016 – REVISED JUNE 2016 Product Folder Links: TPS7B4254-Q1 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. 6.4 Thermal Information THERMAL METRIC(1) TPS7B4254-Q1 UNIT DDA (HSOP) 8 PINS RθJA Junction-to-ambient thermal resistance 45.4 °C/W RθJC(top) Junction-to-case (top) thermal resistance 51.1 °C/W RθJB Junction-to-board thermal resistance 27 °C/W ψJT Junction-to-top characterization parameter 8.2 °C/W ψJB Junction-to-board characterization parameter 26.9 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 6.4 °C/W (1) The tracking accuracy is specified when the FB pin is directly connected to the OUT pin which means VADJ = VOUT, external resistor divider variance is not included. (2) Measured when the output voltage, VOUT, has dropped 10 mV from the nominal value. 6.5 Electrical Characteristics VIN = 13.5 V, VADJ ≥ 2 V, TJ = –40ºC to 150ºC, over operating ambient temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN(UVLO) IN undervoltage detection VIN rising 3.65 V VIN falling 2.8 V ΔVOUT Output voltage tracking accuracy(1) IOUT = 100 μA to 150 mA, VIN = 4 to 40 V VADJ < VIN – 1 V 2 V < VADJ < 18 V –4 4 mV ΔVOUT(ΔIO) Load regulation, steady-state IOUT = 0.1 to 150 mA, VADJ= 5 V 4 mV ΔVOUT(ΔVI) Line regulation, steady-state IOUT = 10 mA, VIN = 6 to 40 V, VADJ = 5 V 4 mV PSRR Power-supply ripple rejection frip = 100 Hz, Vrip = 0.5 VPP, COUT = 10 μF, IOUT = 100 mA 70 dB VDROPOUT Dropout voltage (VDROPOUT = VIN – VOUT) IOUT = 100 mA, VIN = VADJ ≥ 4 V (2) 160 260 mV IOUT(LIM) Output current limitation VADJ = 5 V, OUT short to GND 151 450 520 mA IR(IN) Reverse current at IN VIN = 0 V, VOUT = 40 V, VADJ = 5 V –2 0 µA IR(–IN) Reverse current at negative IN VIN = –40 V, VOUT = 0 V, VADJ = 5 V –10 µA TSD Thermal shutdown temperature 175 ºC TSD_hys Thermal shutdown hysteresis 15 ºC IQ Current consumption 4 V ≤ VIN ≤ 40 V, VADJ = 0 V 2 4 µA 4 V ≤ VIN ≤ 40 V, VADJ = 5 V, IOUT < 100 µA 60 100 µA 4 V ≤ VIN ≤ 40 V, VADJ = 5 V, IOUT < 150 mA 210 260 µA IQ(DROPOUT ) Current consumption in dropout region VIN = VADJ = 5 V, IOUT = 100 μA 70 140 µA IADJ Reference input current VADJ = VFB = 5 V 5.5 µA VADJ(LOW) Reference low signal valid VOUT = 0 V 0 0.7 V VADJ(HIGH) Reference high signal valid |VOUT – VADJ| < 4 mV 2 18 V IFB FB bias current VADJ = VFB = 5 V 0.5 µA |
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