Packaging information
| Package | Pins VQFN (RGE) | 24 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the BQ25887
- High-efficiency 2-A, 1.5-MHz switch mode boost
charger
- 93.4% Charge efficiency at 5-V adapter, 7.6-V battery, 1-A charge
- Optimized for USB input and 2-cell Li-Ion battery
- Selectable low power PFM mode for light load operation
- Single input to support USB input
adapters
- Supports 3.9-V to 6.2-V input voltage range with 20-V absolute maximum input voltage rating
- Input current limit (500 mA to 3.3 A with 100-mA resolution) to support USB2.0, USB3.0 standard adapters
- Maximum power tracking by input voltage limit up-to 5.5 V
- Cell balancing and I2C control
- Integrated FETs for balancing current up to 400 mA
- Automatic cell balancing with default register setting
- Input current optimizer (ICO) to maximize input power without overloading adapters
- Integrated 16-bit ADC for system monitoring (BUS voltage and current, each cell voltage, charge current, and NTC and die temperature)
- High integration includes all MOSFETs, current sensing and loop compensation
- High accuracy
- ±0.5% Charge voltage regulation
- ±5% Charge current regulation
- ±7.5% Input current regulation
- Safety
- Battery temperature sensing in charge
- Thermal regulation and thermal shutdown
Description for the BQ25887
The BQ25887 is a highly-integrated 2-A boost switch-mode battery charge management device for 2-cell (2s) Li-Ion and Li-polymer battery. The BQ25887 has I2C control with cell balancing for USB input.