Other Parts Discussed in Thread: TPS60403, TPS723-Q1, TLV700, TPS7A39, TPS7A39EVM-865
Hi, I'm sorry to be the one asking the "would this work..." question, but I prefer to ask before buying! So, my question is the following:
If I had one 3.7V Li-ion battery and I needed a symmetric supply for a 3.3V EMG application, could I use a TLV70033-Q1 to regulate it from 3.7V to 3.3V operating at 50mA? By reading the datasheet it seems that it'd work. I'm more confused about the negative part. The negative suuply is working at around 10mA, as it's not supplying the digital circuitry, just the analog, thus I thought about using the TPS60403 60mA Charge Pump Voltage Inverter to get -3.7V, and then use a negative LDO to get -3.3V? (I couldn't find a fixed 3.3V negative voltage regulator that's like the TLV70033-Q1, which would you recommend?)
Would you recommend this setup for EMG applications in which the signals are very susceptible to noise? Maybe the Charge Pump adds too much noise and it's better to get two 3.7 batteries and connect them in series to get the symmetric supply? I hope you understand my questions!
Thanks in advance!
Roberto