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Q: TPS65053 unused ldo by 8157
Customer is using the TPS65053, but doesnt need LDO2 and 3. I sent them the following reply. Please verify that it is correct. I based it off of a previous post, and assumed that the TPS65053 and TPS65023 would have the same requirements.
You can get rid of the extra components. Here is what you should do.
• Tie EN_LDO2 and EN_LDO3 to GND.
• Connect FB_LDO2 to VLDO2 and don’t connect it to anything else. You can then remove the LDO2 resistor divider and output caps.
• Leave VLDO3 floating. Remove its output cap.
• Leave VINLDO2/3 floating. You can then remove bypass caps associated with that input.
You guys should add a "what to do with unused regulators" section to each of the PMU datasheets.
A: Re: TPS65053 unused ldo by 1129650
You are correct with the configurations for unused regulators VLDO2 and VLDO3.
Thanks for the feedback, I will see if this is something we can get in the datasheets.
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