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TPS40428 Datasheet(PDF) 9 Page - Texas Instruments |
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TPS40428 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 92 page TPS40428 www.ti.com SLUSBV0A – MAY 2014 – REVISED JULY 2014 Electrical Characteristics (continued) TJ = –40ºC to 125ºC, VIN = VVDD = 12 V, RRT valued to produce a switching frequency (fSW) of 500 kHz, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PMBus ADDRESSING IADD Address pin bias current 8.775 9.75 10.725 µA INITIALIZATION TIME Initialization time after BP3 voltage is tINI 1 ms ready(14) TEMPERATURE SENSE AND THERMAL SHUTDOWN TSD Junction shutdown temperature(14) 160 °C THYST Thermal shutdown hysteresis(14) 20 Ratio of bias current flowing out of TSNS ITSNS(ratio) Non-smart power mode 9.7 10 10.3 pin, state 2 to state 1 ITSNS(1) State 1 current out of TSNS pin Non-smart power mode 10 µA ITSNS(2) State 2 current out of TSNS pin Non-smart power mode 100 µA –40°C ≤ TSNS ≤ 125°C, Non-smart power –4.5 4.5 mode TSNS(acc) External temperature sense accuracy(15) °C –40°C ≤ TSNS ≤ 125°C, Smart power mode –3 3 Overtemperature fault limit(14) Factory default settings 145 TOT(flt) °C OT fault limit range(14) 120 165 Overtemperature warning limit(14) Factory default settings 125 TOT(warn) °C OT warning limit range(14) 100 140 TOT(step) OT fault/warning step 1 °C TOT(hys) OT fault/warning hysteresis(14) 20 °C (14) Specified by design. Not production tested. (15) Performance verified under application conditions. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TPS40428 |
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