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TPS65311-Q1 Datasheet(PDF) 9 Page - Texas Instruments |
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TPS65311-Q1 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 49 page TPS65311-Q1 www.ti.com SLVSCA6A – OCTOBER 2013 – REVISED OCTOBER 2013 ELECTRICAL CHARACTERISTICS (continued) VIN = VINPROT 4.8 V to 40 V, VSUPx = 3 V to 5.5 V, EXTSUP = 0 V, TJ(max) = 125°C, unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT WINDOW WATCHDOG TESTSTART, TESTSTOP, VTCHECK , and RAMP mode: ttimeout Timeout Starts after entering each mode. 230 300 370 ms ACTIVE mode: WD timeout starts with rising edge of RESN Spread spectrum disabled 18 20 22 tWD Watchdog window time ms Spread spectrum enable 19.8 22 24.2 tWD_FAIL Closed window time tWD / 4 tWD_BLK WD filter time 0.5 µs VI_high High level input voltage 2 V VI_low Low level input voltage WD, VIO = 3.3 V 0.8 V VI_hys Input voltage hysteresis 150 500 mV RESET AND IRQ BLOCK tRESNHOLD RESN hold time 1.8 2 2.2 ms Low level output voltage at RESN, VRESL VIN ≥ 3 V, IxRESN = 2.5 mA 0 0.4 V PRESN and IRQ Low level output voltage at RESN VRESL VIN = 0 V, VIO = 1.2 V, IxRESN = 1 mA 0 0.4 V and PRESN Leakage current at RESN, PRESN IRESLeak Vtest = 5.5 V 1 µA and IRQ Number of consecutive reset events NRES 7 for transfer to LPM0 tIRQHOLD IRQ hold time After VVSENSE < VSSENSETH for tVSSENSE_BLK 10 20 µs Rising edge delay of IRQ to rising tDR IRQ PRESN 2 µs edge of PRESN Falling edge delay of RESN to tDF RESN_PRESN 2 µs PRESN / IRQ EXTERNAL PROTECTION VCLAMP Gate to source clamp voltage VIN - GPFET, 100 µA 14 20 V IGPFET Gate turn on current VIN = 14 V, GPFET = 2 V 15 25 µA RDSONGFET Gate driver strength VIN = 14 V, turn off 25 Ω THERMAL SHUTDOWN AND OVERTEMPERATURE PROTECTION TSDTH Thermal shutdown Junction temperature 160 175 °C TSDHY Hysteresis 20 °C Blanking time before thermal tSD-BLK 10 20 µs shutdown Overtemperature flag is implemented as local temp TOTTH Overtemperature flag sensors and expected to trigger before the thermal 150 165 °C shutdown TOTHY Hysteresis 20 °C Blanking time before thermal over tOT_BLK 10 20 µs temperature Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TPS65311-Q1 |
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