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ADN8833 Recommended for New Designs
The ADN8833 is a monolithic H-bridge TEC driver with integrat-ed 1 A power MOSFETs. It has a linear power stage with the linear driver (LDR) output and...
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ADN8833 on Analog.com

ADN8833

meishan.ng

on Feb 3, 2026

Hi,

We are evaluating ADN8833 but we found the Vcont drift 0.4V when we disable the IC but the PWM signal still maintain the same value, is this scenario normal??

As i studied the datasheet, the voltage will drift only when temperature changes.

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ADIApproved

on Jul 17, 2017 6:40 PM
When the IC is disabled the part doesn't function and the driver stage stop controlling the load. It makes sense Vcont changes.
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meishan.ng
on Jul 18, 2017 9:26 AM
Hi ytu,

Yes, the voltage will drift but the drift is quite big. So may i know how to predict the drift of Vcont?
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ADIApproved

on Jul 18, 2017 5:54 PM
When ADN8833 is disabled, there's no current going through the TEC to maintain the current. The TEC temperature will drift with the heat load you have in the system. The drift will be fed into the microcontroller and cause the CONT to drift too if the microcontroller is sill functioning. As the thermal loop is already broken CONT may eventually saturate. The drift is irrelevant to the ADN8833 since it is disabled.
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meishan.ng
on Jul 21, 2017 4:01 AM
hi ytu,

thanks a lot. it explain clearly.
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ADN8833

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