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TMP303CDRLR Fiches technique(PDF) 9 Page - Texas Instruments |
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TMP303CDRLR Fiches technique(HTML) 9 Page - Texas Instruments |
9 / 24 page HYST SET0 HYST SET1 SOH OUT Time T =0 L C ° T =60 H C ° 10 C ° 50 C ° 5 C ° Measured Temperature Changeshysteresis from10 to C 5 C ° ° ForcesOUTpinhigh regardlessoftemperature 9 TMP303 www.ti.com SBOS486F – JULY 2009 – REVISED FEBRUARY 2016 Product Folder Links: TMP303 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated 8.3 Feature Description 8.3.1 HYSTSET0, HYSTSET1 and SOH Functionality The TMP303A temperature trip window resides within the range of 0°C to 60°C, the TMP303B within 0°C to 55°C, the TMP303C within –20°C to 60°C, and the TMP303D within –15°C to 125°C. When any of these trip thresholds is crossed, the output (OUT) changes state from low to high. OUT does not return to its original low state until the temperature crosses the hysteresis threshold and returns within the range of the temperature trip window. As an example, if the TMP303A is configured with a 10°C hysteresis window (that is, HYSTSET0 = HYSTSET1 = VS), the output does not return to its low state until the temperature either crosses (TL + hysteresis) = 10°C or (TH – hysteresis) = 50°C. The Set Output High (SOH) pin is intended to add test functionality to verify the connectivity of the output (OUT) pin to the system controller or other temperature response system. The SOH pin is internally pulled down to ground with a 100-k Ω resistor. If the SOH pin is grounded or left floating, it has no effect on the behavior of the TMP303A. If the SOH pin is pulled high, the TMP303A immediately forces the output high, regardless of temperature. NOTE This response occurs even if the temperature falls within the 0°C to 60°C temperature window. Figure 10 shows this design in graphical form. Figure 10. TMP303A Output Transfer Curves With Hysteresis Change from 10°C to 5°C and SOH Functionality |
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