I have a problem with the parts at low temperature (-40degC to -16degC) power up. Some times conversion is not correct and Vout latched at uncorrect voltage. pictures at -38degC.
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I have a problem with the parts at low temperature (-40degC to -16degC) power up. Some times conversion is not correct and Vout latched at uncorrect voltage. pictures at -38degC.
Hello Igor,
Are all parts behaving the same way at low temperature? Can you please confirm the layout and schematic for the device as well!
EDIT:
1. Does the behavior go away if the part is heated to room temp, i.e. the latch up condition is no longer seen even if the part is not power-cycled
2. What is the test setup for cooling the part. Is it freeze spray or a thermal chamber?
TMP235 power supply circuit was changed for speed up rise time. But i am waiting for chip correction from TI.