Texas Instruments' BQ25886 is a highly-integrated 2 A boost switch-mode battery charge management and system PowerPath management which enables instant power-on and provides an accurate termination control device for 2-cell (2s) Li-Ion and Li-polymer batteries. The BQ25886 is a standalone solution with PowerPath and on-the-go boost (OTG).
Features
- 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
- Single input to support USB input adapters:
- Supports 4.3 V to 6.2 V input voltage range with 20 V absolute max input voltage rating
- Input current limit (500 mA to 3.3 A) to support USB2.0, USB3.0 standard adapters
- Integrated USB D+/D- auto-detect USB SDP, CDP, DCP, and non-standard adapters
- Input current optimizer (ICO) to maximize input power without overloading the adapters
- High integration includes all MOSFETs, current-sensing, and loop compensation
- Safety:
- Battery temperature sensing in charge
- Thermal regulation and thermal shutdown
- Standalone function with PowerPath management:
- Ultra-high battery discharge efficiency with 17 mΩ battery discharge MOSFET
- Narrow VDC (NVDC) PowerPath management:
- Instant-on works with no battery or deeply discharged battery
- Ideal diode operation in battery supplement mode
- Adjustable charge voltage with a VSET pin supports 8.2 V, 8.4 V, 8.7 V, and 8.8 V
- Adjustable charge current with an ICHGSET pin supports 100 mA to 2,200 mA
- Adjustable input current limit with an ILIM pin
- High accuracy:
- Charge voltage regulation: ±0.5%
- Charge current regulation: ±5.0%
- Input current regulation: ±7.5%
Applications
- Wireless speakers
- Smart speakers
- EPOS printers
- Portable POS
- IP network cameras
