# Why the output voltage of this IC cannot reach higher?

I'm trying to design a remote control. But during the process of design, I found that the output voltage of IC TPS40057 of the switch can just reach to less than 6V. The simplified application diagram of this IC is in the following： I don't know why it can't reach higher value. Can anybody answer me why?

For further reference, the datasheet is at http://www.ti.com/lit/ds/symlink/tps40057.pdf.

Any answer will be highly appreciated!

• "Any answer will be highly appreciated!". How will you show your appreciation? Jan 10, 2017 at 9:30
• You leave a lot of things unclear. Have you build this already and can you not reach 6 V or are you asking about the capabilities of this IC ? What it can do is in the datasheet, if that does not fit your needs, use a different IC. When used properly (Vin is high enough, load not too high, proper components used) this IC can reach 6 V easily. Jan 10, 2017 at 9:32
• Ah,thank you..I have built this already but it cannot reach 6v, I saw the max output voltage of this IC is 6v in the datasheet, so I'm just wondering why it cannot reach... Jan 10, 2017 at 9:55
• If you want us to check, why your design can't reach your desired voltage, you have to supply more information. I.e. the values of all components used. Best thing is, you draw a new schematic with all values given. Jan 10, 2017 at 10:03
• I saw the max output voltage of this IC is 6v in the datasheet Then you misunderstood the datasheet, it says that the maximum voltage on VFB, SS/SD, SYNC is 6V. There is no maximum output voltage specified. Jan 10, 2017 at 10:16