Hello,
I am powering my board using the TLV61225 boost IC with a CR2032 coin-cell battery (nominal voltage 3V when fully charged) to output 3.3V
The circuit draws about 20 mA under load (only 2 LEDs are powered up at a time). According to fig 1 of the datasheet, the boost should be able to source at least 160 mA
When powered from a coin-cell, the circuit draws the maximum amount of current the battery can provide and discharges it in seconds. Seems like a weird mode where the boost is short-circuiting the output.
When powered from a bench power supply with a fairly high current limit (~ 200 mA) the circuit works perfectly and the regulation looks OK (at light load and under load). However lowering the current limit of the bench supply to around ~ 100 mA recreates the behavior of the coin-cell : short-circuit, the boost draws the maximum amount of current.
Here's my schematic (R11 is not loaded):
What explains this behavior and how to fix it?
Thanks for your help!
