Part Number: TPL5110-Q1
Other Parts Discussed in Thread: TPL5110
Hello, we need a 10 minutes intervall but instead of the suggested 57.4K in data sheet we have to put a 43K resistor for R_ext. Why the difference? In our case TPL5110 is powered by a 3V BR3032 cell battery that has a high inner resistance. That's why there is a large 100uF capacitor in parallel because the device works in high current pulse mode.
That is, upon connecting the battery, it takes for the supply voltage about 100ms to ramp up to 3V. Is it possible that the one-time resistor measurement of TPL5110 does not work correctly because of slow ramp?
Thanks
Pourang Mahdavi