Other Parts Discussed in Thread: TPS61261
urgent help required
I have designed a power supply using TPS61221 Booster IC, Input supply is 3V and required output voltage is 3.3V , 7mA.
CR2025 coin cell is used to drive circuit, cell draws 250mA while connecting it to the device and it dubs the input voltages to 0.9V
I have checked without booster IC , direct supply to circuit it works properly , Kindly find schematic design of power supply and give your comments for the same or suggest good IC to boost voltages from 3 to 3.3
Our circuit includes LED(HSMF-C116), sensor(MAX30205MTA+T) and BLE module (BGM13S32F512GN-V2),kindly find attached datasheets for your reference.