data/text/DLP4/900250

BQ40Z50-R2: sleep mode to normal mode configure

Part Number: BQ40Z50-R2 Hello Sir If bq40z50 is configure as "CHG off DSG on no SBS communication" during our device's shipping mode to save power. How to change gauge status to normal mode? Need our SW to configure that or plug in AC source can recover to normal mode automatic? Yihung

Yihung, Unfortunately, to achieve the low power mode the processor and SMBus engine is shutdown. It requires a voltage on PACK pin in order to exit shutdown. You can trying using a switch with current limiting resistor to apply BAT voltage to PACK.

Damian 1. If gauge is in shutdown mode, need apply a battery voltage in PACK pin to wakeup gaue, I think this is what you tell me. 2. For my question, If gauge is in sleep mode, "CHG off DSG on" since DSG is on, there should be a battery votlage on PACK pin already, right? In this case, how to configure gauge back to normal mode? 3. In your gauge IC spec, in sleep mode "CHG off DSG off" gauge IC still consume 52uA, does this means your processor engine is still alive and consume 52uA? Yihung