Texas Instruments' bq25600, bq25600C, and bq25600D devices are highly-integrated 3 A switch-mode battery charge management and system power path management devices for single-cell Li-Ion and Li-polymer batteries. The low impedance power path optimizes switch-mode operation efficiency and reduces battery charging time. The I²C serial interface with charging and system settings make the devices a truly flexible solution.
Features
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- Operation as a parallel charger to provide fast charging in dual charger operation (bq25600C)
- High-efficiency, 1.5 MHz, synchronous switch-mode buck charger
- 92% charge efficiency at 2 A from 5 V input
- Optimized for USB voltage input (5 V)
- Selectable low power pulse frequency modulation (PFM) mode for light load operations
- Supports USB on-the-go (OTG) (bq25600 and bq25600D)
- Boost converter with up to 1.2 A output
- 92% boost efficiency at 1 A output
- Accurate constant current (CC) limit
- Soft-start up to 500 µF capacitive load
- Output short circuit protection
- Selectable low power PFM mode for light load operations
- BATFET control to support ship mode, wake up, and full system reset (bq25600 and bq25600D)
- Flexible autonomous and I2C mode for optimal system performance
- High integration includes all MOSFETs, current sensing, and loop compensation
- High battery discharge efficiency with 19.5 mΩ battery discharge MOSFET
- 17 µA low battery leakage current
Applications
- Smartphones
- Portable internet devices and accessories
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- Single input to support USB input and high voltage adapters
- Support 3.9 V to 13.5 V input voltage range with 22 V absolute maximum input voltage rating
- Programmable input current limit (100 mA to 3.2 A with 100 mA resolution) to support USB 2.0, USB 3.0 standards and high voltage adapters (IINDPM)
- Maximum power tracking by input voltage limit up to 5.4 V (VINDPM)
- VINDPM threshold automatically tracks battery voltage
- Auto-detect USB SDP, DCP, and non-standard adapters
- Narrow VDC (NVDC) power path management
- Instant-on works with no battery or deeply discharged battery
- Ideal diode operation in battery supplement mode
- High accuracy
- ±0.5% charge voltage regulation
- ±6% at 1.38 A charge current regulation
- ±10% at 0.9 A input current regulation
- Remote battery sensing for fast charge
- Create a custom design using the bq25600, bq25600D, and bq25600C with the WEBENCH®Power Designer
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