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ISO7721DWR Datasheet(PDF) 9 Page - Texas Instruments |
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ISO7721DWR Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 42 page  9 ISO7720, ISO7721 www.ti.com SLLSEP3C – NOVEMBER 2016 – REVISED JULY 2018 Product Folder Links: ISO7720 ISO7721 Submit Documentation Feedback Copyright © 2016–2018, Texas Instruments Incorporated (1) The maximum safety temperature, TS, has the same value as the maximum junction temperature, TJ, specified for the device. The IS and PS parameters represent the safety current and safety power respectively. The maximum limits of IS and PS should not be exceeded. These limits vary with the ambient temperature, TA. The junction-to-air thermal resistance, RθJA, in the Thermal Information table is that of a device installed on a high-K test board for leaded surface-mount packages. Use these equations to calculate the value for each parameter: TJ = TA + RθJA × P, where P is the power dissipated in the device. TJ(max) = TS = TA + RθJA × PS, where TJ(max) is the maximum allowed junction temperature. PS = IS × VI, where VI is the maximum input voltage. 6.8 Safety Limiting Values Safety limiting intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DW-16 PACKAGE IS Safety input, output, or supply current(1) RθJA = 86.5 °C/W, VI = 5.5 V, TJ = 150°C, TA = 25°C, see Figure 1 263 mA RθJA = 86.5 °C/W, VI = 3.6 V, TJ = 150°C, TA = 25°C, see Figure 1 401 RθJA = 86.5 °C/W, VI = 2.75 V, TJ = 150°C, TA = 25°C, see Figure 1 525 PS Safety input, output, or total power(1) RθJA = 86.5 °C/W, TJ = 150°C, TA = 25°C, see Figure 2 1445 mW TS Maximum safety temperature(1) 150 °C DWV-8 PACKAGE IS Safety input, output, or supply current(1) RθJA = 84.3 °C/W, VI = 5.5 V, TJ = 150°C, TA = 25°C, see Figure 3 270 mA RθJA = 84.3 °C/W, VI = 3.6 V, TJ = 150°C, TA = 25°C, see Figure 3 412 RθJA = 84.3 °C/W, VI = 2.75 V, TJ = 150°C, TA = 25°C, see Figure 3 539 PS Safety input, output, or total power(1) RθJA = 84.3 °C/W, TJ = 150°C, TA = 25°C, see Figure 4 1483 mW TS Maximum safety temperature(1) 150 °C D-8 PACKAGE IS Safety input, output, or supply current(1) RθJA = 137.7 °C/W, VI = 5.5 V, TJ = 150°C, TA = 25°C, see Figure 5 165 mA RθJA = 137.7 °C/W, VI = 3.6 V, TJ = 150°C, TA = 25°C, see Figure 5 252 RθJA = 137.7 °C/W, VI = 2.75 V, TJ = 150°C, TA = 25°C, see Figure 5 330 PS Safety input, output, or total power(1) RθJA = 137.7 °C/W, TJ = 150°C, TA = 25°C, see Figure 6 908 mW TS Maximum safety temperature(1) 150 °C |
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