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BQ32000: backup supply current concern

Intellectual 1980 points

Replies: 2

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Part Number: BQ32000

Hi team,

My customer measured the backup supply current and found it was up to 80uA, then we found the description that VCC pin must be initialized after every total power loss situation in datasheet, section 8.2.2.3 Utilizing the Backup Supply.

Does it mean we need to apply an additional 3.3V, >1ms pulse at VCC after VCC is not powered? Could you please suggest how to implement the initialization based on the schematic below? Thanks for your support!

Best regards,

Sam Ting

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