Other Parts Discussed in Thread: TPS62050,
I don't use LBO. Can I connect to GND?
thank you.
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Hi Nishikata,
If you don't use LBI/LBO feature, you can leave them float or connect them to GND.
Thanks,
Nancy
Hello Nancy san.
Let me ask you a few more questions.
In Figure 4 of the data sheet, "Enable Internal Circuits" appears to be inactive when the LBO is connected to GND.
Does DCDC work even in this state?
I would like to know if the logic of the LBO pin affects the operation of the DCDC on the TPS62051 (not the TPS62050).
thank you.
Hi Nishikata-san,
I will check with design team for this feature and get you back soon.
Thanks,
Nancy
Hi Nishikata-san,
Yes, you are right. You can not use TPS62051 if you don't use LBI/LBO feature. LBI/LBO connecting to GND will gate with EN pin to turn on the device.
Could you switch to other parts TPS62050/62052/62054/62056?
Thanks,
Nancy
Hi Nancy san
As shown in the figure
LBI connects to + 5V.
LBO is connected to GND.
I have confirmed that it actually starts with this circuit, but is this usage correct?
thank you
Hi Nishikata-san,
No, it is incorrect. Both LBI and LBO should be connected to 5V.
Thanks,
Nancy