TPS61220: Low input voltage boost switcher for single cell PbAcid (1.8V - 2.2) with Iout max > 200mA

Part Number:TPS61220

Hello;

I'm searching the a booster converter for a single lead-acid cell to 3.3V @ at least ~220mA. I'm found the LT1300 and am looking  for an alternative/cross.  I see your tps6122x, but its max output current appears limited to  <~125mA @ Vin = 1.8.  Will you please suggest a TI switcher for this application.

Thanks in advance.