ZHCSJI9A March 2019 – June 2019 BQ25886
PRODUCTION DATA.
The device provides innovative Input Current Optimizer (ICO) to identify maximum power point without overloading the input source. The algorithm automatically identifies maximum input current limit of a power source without staying in VINDPM to avoid input source overload.
On BQ25886, ICO starts automatically when DCP type of input source is detected. When other input source typs are detected, ICO is disabled. The actual input current limit used by the Dynamic Power Management circuitry is limited by the lower value of current limit identified by the ICO algorithm or the current limit set by the ILIM pin. When the algorithm is enabled, it runs continuously to adjust input current limit of Dynamic Power Management (IINDPM) using ICO algorithm. When optimal input current is identified, the input current limit set by ICO will not be changed until the algorithm is forced to run by the following event:
| DEVICE | INPUT SOURCE | INPUT CURRENT LIMIT (IINDPM) | AUTOMATIC START ICO ALGORITHM |
|---|---|---|---|
| BQ25886 (D+/D–) | USB SDP (USB500) | 500 mA | Disable |
| USB CDP | 1.5 A | Disable | |
| USB DCP | 3.0 A | Enable | |
| Divider 3 | 1 A | Disable | |
| Divider 1 | 2.1 A | Disable | |
| Divider 4 | 2.4 A | Disable | |
| Unknown 5V Adapter | 500 mA | Disable |