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Part Number: TPS728
My customer looking for LDO solution 1.05V/1.3V <100mA which is adjustable type.
Input is Alkaline x 2 .
One idea of customer is to change 1.3V Or 1.05V using ext FET switch and change resister divider. (RP111 Ricoh)
For this,TPS74701 seems good, but bias is necessary....
Onother idea talking with customer, is TPS7A7100 Or TPS728xx
So, here is question.
For TPS718xx, 1.3V/1.05V ( TPS718130105 ) is available?
Do you think TPS7A7100 is better ?
Please give me your opinion.
We do not currently have a version of TPS718 for your desired voltages.
You can really use almost any two LDOs for this application. You would place the LDOs in a parallel configuration with the inputs tied together and the outputs tied together similar to the blog. The enable for the 1.05 output can be tied to Vin because it should always be on. Due to the fact that LDOs do not sink current, when the output is higher than the set voltage, the LDO does not pull down on the output voltage; therefore, the 1.05V LDO will not pull down on the output while the desired output is 1.3V. At this point you will simply need to drive the enable of the 1.3V LDO when you desire the 1.3V output. Since both inputs will be tied together you will not have a reverse current condition.
Two TPS720 LDOs would work if you would like fixed output devices.
In reply to Ryan Eslinger:
Hello Ryan san
Thank you for your answer so quickly.
I 'll suggest customer as your advise. ( I understand changing FB resistor devider is no smart)
Thank you again!
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