Other Parts Discussed in Thread: TL7770-5
Hello,
Regarding to input on TLV61220, my customer is asking some question.
Two super capacitor(2.2nFx2) are placed to input side of TLV61220.
These capacitor are used for backup at main power off
・Input: 4.2V, output: 5V
Please refer below schematics.
(Question)
In this case, the output is unstable for a while, and after that it is stable.
When output is set as 4.7V, this behavior is not happened.
(Please refer below.)
Could you please tell me possible reason about this behavior, if possible?
I think that it will be affected by two super capacitor.
Could you please give me some comment or advice?
Regards,
Tao2199