The bq2438x family of devices are charger front-end integrated circuits (ICs) designed to provide protection to Li-ion batteries from failures of the charging circuit. The device continuously monitors the input voltage and battery voltage. The device operates like a linear regulator, maintaining a 5.5-V (bq24380) or 5-V (bq24381, bq24382) output with input voltages up to the Input overvoltage threshold. During input overvoltage conditions, the device immediately turns off the internal pass FET disconnecting the charging circuit from the damaging input source. Additionally, if the battery voltage rises to unsafe levels while charging, power is removed from the system. The device checks for short-circuit or overload conditions at its output when turning the pass FET on, and if it finds unsafe conditions, it switches off and then rechecks the conditions. Additionally, the device also monitors its die temperature and switches off if it exceeds 140°C.
When the device is controlled by a processor, the device provides status information about fault conditions to the host.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | bq2438x Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode datasheet (Rev. C) | PDF | HTML | 28 Aug 2015 |
| EVM User's guide | bq2430x/1x DSG EVM (HPA245) for Li+ Charger Front End Protection IC (Rev. B) | 04 Nov 2016 |
For additional terms or required resources, click any title below to view the detail page where available.
The bq2430x/1x/8x evaluation module is a complete charger module for evaluating a charger front-end protection and charger solution using the bq2430x/1x/8x and bq24080 devices. This user’s guide presents test summary information, printed-circuit board layout guidelines, bill of materials, (...)
| Package | Pins | Download |
|---|---|---|
| WSON (DSG) | 8 | View options |
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