Q: TPS62260 Vin Iout efficency by 9312

He seeks clarification on specs for the TPS62260.  Starting with page 3.  The table states that for Vin = 2.0 - 2.3 V, Iout <= 150 mA .  The on page 7, fig. 5: For Vin = 2.3 V, Iout > 300 mA for 80% efficiency. Can I use this part at Vin = 2 V with Iout = 300 mA but just poorer efficency (<80 %)? If yes, what would the efficiency actually be?


A: Re: TPS62260 Vin Iout efficency by 1090425

The spec on page 3 means that the IC is not guaranteed to be able to provide more than 150 mA output current at less than 2.3V in.  It is not a matter of efficiency but the IC's capability at these very low Vins.