I have a Pololu 3.3V step-up converter - U1V11F3. I tested it by connecting a regular 1.5V alkaline battery for input and a resistor at output. With no load or small load (10K) it keeps the output voltage at 3.3, however with higher loads (100 ohm) it drops the voltage to 3.13 with a current of 31 mA and with 47 ohm and current of about 60 mA it drops to 2.7-2.8
I have noticed that the current for the battery goes as high as 150 mA during that time and the measured voltage drops from 1.46 to 1.24
Does this mean that the battery is not able to provide a high enough current? Looking at the datasheet for the converter chip it should keep the voltage up to 300 mA output current. My intended use for the converter is an Arduino compatible node with RFM69HW chip that should sleep most of the time, but wake up and send radio data which should increase the current to about 130 mA for short periods of time, but obviously the converter can't keep up with the demand. I can try not to use the highest power of the chip, but still the current will be in the tens of mA which apparently will not work.
Does anybody know if other chips are working better? Or has anyone experience with a similar working configuration?