Reference to the forum comments posted on 27/06/11 by Paul Toffolo and responded to by Ron Michallick Linear Applications.
The forum post indicates TL783 will operate down to -23 ºC for a worst case production variable and to -40 ºC for less severe production variables.
I understand the low temperature issue is related to start-up with two of your production processes shifted.
We have hundreds of these devices successfully installed in a continuously running 60mA constant current configuration in outside cubicles at fixed locations in the UK.
We have had no temperature related failures in the field. (The average minimum temperature in the UK is around -6ºC while our spec calls for -25ºC minimum).
Most units are continuously powered but potential future application runs in start/stop mode.
Is there a way in which we could confirm that the devices we are using at any given time would not suffer from the rare low temperature start-up issue?
a) for TL783 devices in a continuously running application?
b) for TL783 devices in a stop/start application?
Would it be possible for T.I. to confirm OK operation down to -20ºC? Or is it a case of; can't meet -25ºC, therefore stating pass test point of 0ºC?