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Part Number: TPS3702-Q1
What’s the orderable part number of tps3702-Q1 if it’s used to monitor 3.3V power rail with ±5% accuracy?
From blow table, it seems tps3702AX33 is the right choice.
However, tps3702cx33 is recommended in a typical application.
I am trying to confirm whether tps3702-Q1 supports 3.3V/1.2V monitor with +-5% accuracy.
Currently the released options for the 1.2V and 3.3V are with the +/-4% when the SET pin is held high.
Can you use the +/-4% ?
Else you can look at the adjustable part TPS3700
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In reply to Chintan Parekh:
In section 8.2 and 8.2.1, +-%4 device is used to meet the +-5% design requirement, and the design result is very close to +-5%.
Could you explain why there is a gap? or what's the error source?
In reply to Dongbao Zhou:
The error source in accuracy comes from the threshold tolerance for V_IT(OV) and V_IT(UV). The tolerance comes from the accuracy of the internal current source and the reference of the internal comparator. This is referred to at device accuracy. In the application you mentioned, a 4% device is used but the devices can have up to 0.9% additional accuracy error across temp.
Please let us know if you have any more questions. Thanks!
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