Part Number: TS5A3154
I have this circuit that I've found consumes 20 mA where it should consume 1-2 uA.
When the P1 connector's P$2 pin = Vcc, there is an increase of 10 mA. I removed U2 and U3 and there was a decrease in current consumption of 20 mA. I've seen an E2E thread where the user was powering a switch with 10V, but controlling it with a 3.3V signal. Here, the switches are powered with 5.6V and controlled with 3.3V. Would that be the problem? The datasheet says that 2.4V < VIH < 5.5V, so it should be good.
Please see note 2 from the TS5A3154 datasheet. If the digital control logic signals are floating or not at V+ or ground there will be excess current consumption through Icc. If you place the logic at Vcc of the switch does this fix the issue?
More information can be found in the application note.
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In reply to Adam Torma:
In reply to user4725373:
I can't really test that without removing parts or cutting traces on the PCB. However, I don't think your second guess is this, as CONN_V1 (pin A1 of U2) is floating.
The internal schematic is not in the datasheet. From your perspective, is the more plausible cause of this extra current is the delta in voltage between IN/EN and V+?
Thank you for taking the time to do that.
These switches were powered at 5.6V because they were used to route a signal that could go up to 5.5V. I'll think of something else on the next revision.
Have a great day,
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