Hi ADI team,
I use LTC3769HFE#PBF in my circuit board.

When RUN pin voltage = 3V, output voltage is 50V which is OK.
However, when RUN pin voltage = 0V, output voltage is 28V which is Vin.
Is that normal for LTC3769HFE#PBF ?
Thanks~
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LTC3769
Recommended for New Designs
LTC3769 is a high performance single output synchronous boost converter controller that drives an all N-channel power MOSFET stage. Synchronous rectification...
Datasheet
LTC3769 on Analog.com
Hi ADI team,
I use LTC3769HFE#PBF in my circuit board.

When RUN pin voltage = 3V, output voltage is 50V which is OK.
However, when RUN pin voltage = 0V, output voltage is 28V which is Vin.
Is that normal for LTC3769HFE#PBF ?
Thanks~
However, when RUN pin voltage = 0V, output voltage is 28V which is Vin.
Is that normal for LTC3769HFE#PBF ?
It's normal, because the Q3 internal diode from S to D is forward biased and allows current to flow from In to out even with Gate turned off.
Brian
Hi Brian,
Thanks for your reply !