ZHCSEK5A JANUARY 2015 – September 2018 TPL5110
PRODUCTION DATA.
During start-up, after POR, the TPL5110 executes a one-time measurement of the resistance attached to the DELAY/M_DRV pin in order to determine the desired time interval for DRV. This measurement interval is tR_EXT. During this measurement a constant current is temporarily flowing into REXT.
Once the reading of the external resistance is complete, the TPL5110 enters automatically in one of the two modes according to the EN/ONE_SHOT value. The EN/ONE_SHOT pin needs to be hard wired to GND or VDD according to the required mode of operation.