SNVSCF7 December 2022 TPS3435
PRODUCTION DATA
The watchdog timeout design requirement can be met either by using a fixed-timeout version of the TPS3435 or by connecting a capacitor between the CWD pin and GND. The typical values can be met with preprogrammed fixed time options, hence a pinout offering fixed time options is selected. Please see the Section 7.6 for a list of fixed timeouts. If using the CWD feature, please refer to Section 8.3.1.1 for instructions on how to program the timout period. In this application example, the 40 ms timeout watchdog period is achieved by using watchdog time of 10ms (option D) and watchdog time scaling of 4 (option B). Connect SET[1:0] = 0b'10 to select watchdog time scaling of 4.