Hello TI Experts,
We are developing product using CC2650 BLE with display having average current consumption ranging from 8uA to 50uA (during BLE advertisements).
Product is expected to runs on coin cell battery CR2450 or CR2430 for Few years.
While testing we have found that when driving display continuously MCU stops updating display.
When we measured the battery voltage it showed 2.7 to 2.8V. (updating display consumes 15mA only while updating contents)
Cut-off voltage for CR2450 is 2.0 volts.
So we are planning to use Boost Convertor.
Expecting that Boost-convertor will boost the coin cell's voltage from "2.0 or 2.7 volts" to "3.0 volts" and will further make battery more usable.
Currently we are considering about following products
1) TPS61291 - TPS61291 Low Iq Boost Converter with Bypass Operation datasheet (Rev. A)
2) TPS61023 - TPS61023 3.7-A Boost Converter with 0.5-V Ultra-low Input Voltage datasheet (Rev. B)
3) TPS61220 - TPS6122x Low Input Voltage, 0.7V Boost Converter With 5.5μA Quiescent Current datasheet (Rev. B)
Please help us to decide the correct boost convertor.
ANY OTHER BETTER PARTS ARE WELCOME
Thank you
Dnyaneshvar Salve
