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TPS23851 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS23851 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 62 page  TPS23851 www.ti.com SLUSAB3 – SEPTEMBER 2010 ELECTRICAL CHARACTERISTICS (continued) Conditions are -20 ≤ TJ ≤ 125°C unless otherwise noted. VVDD = 3.3 V, VVEE = -48 V, VDGND = VAGND, and all outputs are unloaded, unless otherwise noted. Positive currents are into pins. Current sense resistor = 0.5 Ω. Typical values are at 25°C. All voltages are with respect to DGND unless otherwise noted. Operating registers loaded with default values unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Timings TICUT = 00 50 70 TICUT = 01 25 35 tICUT ICUT time limit TICUT = 10 100 140 TICUT = 11 200 280 TSTART = 00 50 70 TSTART = 01 25 35 Maximum current limit tSTART duration in port start-up TSTART = 10 100 140 TSTART = 11 200 280 ms Detection duration with tDET Time to complete a detection 275 425 4-point discovery Auto or semi-auto mode. From detection complete 50 tpdc Classification duration Manual mode. From class command 50 Auto mode from end of detection to port turn on 200 Tpon Port power on delay Manual mode from port turn on command to IGATE 4 = IGO+ Delay before next attempt to power a port following ted Error delay timing 750 power removal due to error condition Reset time duration from TRESET 3 6 RESET pin µs TRDG RESET input deglitch time 1 5 TDIS = 00 300 400 TDIS = 01 75 100 PD Maintain Power signature tMPDO ms dropout time limit TDIS = 10 150 200 TDIS = 11 600 800 tSHDG SHDNn input deglitch time SHDNx pin assertion threshold 1 5 µs tPOR device power-on reset delay 20 ms Digital Interface VIH Digital input High 2.4 VIL Digital input Low 0.8 V at 3 mA 0.4 VOL Digital output Low SDAO at 5 mA 0.7 Rpullup Pullup resistor to VDD RESET, A[3:0], /SHDN[4:1] 30 50 80 k Ω Rpulldown Pulldown resistor to DGND AUTO pin 30 50 80 Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): TPS23851 |
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