ZHCSOW9C october 2022 – july 2023 TPSM82912 , TPSM82913 , TPSM82913E
PRODUCTION DATA
The device is enabled by pulling the EN/SYNC pin high and has an accurate rising threshold voltage of typically 1.01 V. After the device is enabled, the operation mode is set by the configuration of the S-CONF pin. This occurs during the device start-up delay time tdelay. After tdelay expires, the internal soft-start circuitry ramps up the output voltage over the soft-start time set by the CNR/SS capacitor. The start-up delay time tdelay varies depending on the selected S-CONF value. the time is shortest with smaller S-CONF resistors.
The EN/SYNC pin has an active pulldown resistor RPD. This resistor prevents an uncontrolled start-up of the device, in case the EN/SYNC pin cannot be driven to a low level. The pulldown resistor is disconnected after start-up. With EN set to a low level, the device enters shutdown and the pulldown resistor is activated again.