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IS32LT3953 Datasheet(PDF) 5 Page - Integrated Silicon Solution, Inc |
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IS32LT3953 Datasheet(HTML) 5 Page - Integrated Silicon Solution, Inc |
5 / 10 page IS32LT3953 Integrated Silicon Solution, Inc. – www.issi.com 5 Rev. 00A, 11/29/2013 ELECTRICAL CHARACTERISTICS (CONTINUE) VIN = 24V, TA = -40⁰C ~ +125⁰C, Typical values are at TA = 25°C Symbol Parameter Test Conditions Min. Typ. Max. Unit Enable Input VIH Logic high voltage VPWM increasing 1.8 V VIL Logic low voltage VPWM decreasing 0.4 V RPWMPD EN pin pull-down resistance VPWM = 5V 100 kΩ tPWML Maximum PWM dimming off-time Measured while PWM = low, during dimming control, and internal references are powered-on (exceeding tPWML results in shutdown) 10 17 ms Thermal Shutdown TSD Thermal shutdown threshold 165 °C TSDHYS Thermal shutdown hysteresis 25 °C Note 1: The internal linear regulator is not designed to drive an external load. |
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