Other Parts Discussed in Thread: BQ24072, , TPS22918, TPS22950, TPS22917, TPS22916, TPS22919
Hello,
We would want to control(On/OFF) the power to a GSM modem (Quectel M66) powered by lithium-ion battery. We want to use TPS27081 chip for the control.
Design requirements are as follows:
1. System out from BQ24072(used for charging the battery) will be given as input to the TPS27081A chip
2. At the input pin of TPS27081, will have voltages ranging from (3.3-4.2v), On the load pin of TPS27081 will have a GSM modem
3. ON/OFF pin of TPS27081 have GPIO voltages of 0 and ~5V
GSM draws a peak current of 1.2A at the time of registration. and 200mA for normal operation.
Could you please help me select values of R1, R2 ,C1, C2 for a smooth operation, because I am worried if the device would enter saturation and heat up at the time of operation.
Regards,
Suraj