JAJSVD8 August 2024 BQ25758A
PRODUCTION DATA
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When a valid input supply is present, it is possible to force the device into HIZ Mode which disables switching, disables REGN LDO. The system load is provided by the battery in this mode. The controller enters HIZ Mode when EN_HIZ bit is set to 1 or the IIN pin is pulled above VIH_ILIM_HIZ (refer to Section 7.3.4.3.1.1).
If the device is operating in reverse mode with the converter turned on, and the device enters HIZ mode (EN_HIZ bit is set to 1 or IIN pin is pulled above VIH_ILIM_HIZ), switching stops. Once HIZ mode condition is cleared by the host, the device resumes reverse mode operation.
The device exits HIZ Mode when the EN_HIZ bit is cleared to 0 and the IIN pin is pulled below 0.4 V.