The OV chopper circuit does not work very well in combination with the SLEEPN pin. If the IC is inactive (for example when SLEEPN is active) VS is shorted by the OV circuit.
Our recommendation: Instead of pulling the gate to 5V, use a GPIO of the microcontroller to enable the OV chopper:
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Our recommendation: Instead of pulling the gate to 5V, use a GPIO of the microcontroller to enable the OV chopper: