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TPS22917 Datasheet(PDF) 11 Page - Texas Instruments |
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TPS22917 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 14 page J(MAX) A D(MAX) JA T T P - = q 11 TPS22917 www.ti.com SLVSDW8 – SEPTEMBER 2017 Product Folder Links: TPS22917 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated 10.2 Layout Example Figure 4. Recommended Board Layout 10.3 Thermal Considerations The maximum IC junction temperature should be restricted to 125°C under normal operating conditions. To calculate the maximum allowable dissipation, PD(max) for a given output current and ambient temperature, use Equation 8: where • PD(MAX) = maximum allowable power dissipation • TJ(MAX) = maximum allowable junction temperature (125°C for the TPS22917) • TA = ambient temperature of the device • θJA = junction to air thermal impedance. Refer to the Thermal Information table. This parameter is highly dependent upon board layout. (8) |
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