over operating free-air temperature range (unless otherwise noted) PARAMETER | TL494 | UNIT |
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D | DB | N | NS | PW |
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RθJA | Package thermal impedance(1)(2) | 73 | 82 | 67 | 64 | 108 | °C/W |
(1) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA) / θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
(2) The package thermal impedance is calculated in accordance with JESD 51-7.