ZHCSHQ2B November 2017 – May 2018 TPS62821 , TPS62822 , TPS62823
PRODUCTION DATA.
The device starts operation, when Enable (EN) is set High. The input threshold levels are typically 0.9V for rising and 0.7V for falling signals. Do not leave EN floating. Shutdown is forced if EN is pulled Low with a shutdown current of typically 50nA. During shutdown, the internal power MOSFETs as well as the entire control circuitry are turned off and the output voltage is actively discharged through the SW pin by a current sink. Therefore, VIN must remain present for the discharge to function.