SLUSFD2B September 2023 – March 2024 TPSM861252 , TPSM861253 , TPSM861257
PRODUCTION DATA
The EN pin controls the turn-on and turn-off of the device. When EN pin voltage is above the turn-on threshold, the device starts switching and when the EN pin voltage falls below the turn-off threshold IC stops switching. The default status is low. There is a 2MΩ internal pulldown resistor in the EN pin.
EN can be controlled by a typical divider resistor circuit from Vin or by a voltage of lower than 5.5V.
Because there is a 2MΩ internal pulldown resistor in the EN pin, TPSM861253 also supports to only connect a top resistor from VIN pin to EN pin. EN voltage is got by the divide net of top resistor and 2MΩ. EN voltage is not allowed to be over 6V.