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ISO1211 Datasheet(PDF) 9 Page - Texas Instruments |
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ISO1211 Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 28 page  9 ISO1211, ISO1212 www.ti.com SLLSEY7 – JUNE 2017 Product Folder Links: ISO1211 ISO1212 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) The safety-limiting constraint is the maximum junction temperature specified in the data sheet. The power dissipation and junction-to-air thermal impedance of the device installed in the application hardware determines the junction temperature. The assumed junction-to-air thermal resistance in the Thermal Information table is that of a device installed on a high-K test board for leaded surface-mount packages. The power is the recommended maximum input voltage times the current. The junction temperature is then the ambient temperature plus the power times the junction-to-air thermal resistance. 6.8 Safety Limiting Values Safety limiting (1) intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry. A failure of the I/O can allow low resistance to ground or the supply and, without current limiting, dissipate sufficient power to overheat the die and damage the isolation barrier, potentially leading to secondary system failures. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ISO1211 IS Safety input, output, or supply current - side 1 RθJA = 146.1°C/W, VI = 2.75 V, TJ = 150°C, TA = 25°C, see Figure 1 310 mA RθJA = 146.1°C/W, VI = 3.6 V, TJ = 150°C, TA = 25°C, see Figure 1 237 RθJA = 146.1°C/W, VI = 5.5 V, TJ = 150°C, TA = 25°C, see Figure 1 155 IS Safety input current - field side RθJA = 146.1°C/W, VI = 24 V, TJ = 150°C, TA = 25°C, see Figure 1 35 mA RθJA = 146.1°C/W, VI = 36 V, TJ = 150°C, TA = 25°C, see Figure 1 23 RθJA = 146.1°C/W, VI = 60 V, TJ = 150°C, TA = 25°C, see Figure 1 14 PS Safety input, output, or total power RθJA = 146.1°C/W, TJ = 150°C, TA = 25°C, see Figure 2 855 mW TS Maximum safety temperature 150 °C ISO1212 IS Safety input, output, or supply current - side 1 RθJA = 116.9°C/W, VI = 2.75 V, TJ = 150°C, TA = 25°C, see Figure 3 389 mA RθJA= 116.9°C/W, VI = 3.6 V, TJ = 150°C, TA = 25°C, see Figure 3 297 RθJA = 116.9°C/W, VI = 5.5 V, TJ = 150°C, TA = 25°C, see Figure 3 194 IS Safety input current - field side RθJA = 116.9°C/W, VI = 24 V, TJ = 150°C, TA = 25°C, see Figure 3 44 mA RθJA= 116.9°C/W, VI = 36 V, TJ = 150°C, TA = 25°C, see Figure 3 29 RθJA = 116.9°C/W, VI = 60 V, TJ = 150°C, TA = 25°C, see Figure 3 17 PS Safety input, output, or total power RθJA = 116.9°C/W, TJ = 150°C, TA = 25°C, see Figure 4 1070 mW TS Maximum safety temperature 150 °C |
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