Integrated battery charging ICs from Texas Instruments intended for use with Lithium-Ion & Lithium-Polymer cells. These devices provide a complete charging and monitoring solution and include internal power devices capable of supplying charging currents of up to several amps.
Feature
- High Efficiency 5-A, 1.5-MHz Switch Mode Buck Charge
- 93% Charge Efficiency at 2 A and 91% Charge Efficiency at 3-A Charge Current
- Optimize for High Voltage Input (9 V to 12 V)
- Low Power PFM mode for Light-Load Operations
- USB On-the-Go (OTG) with Adjustable Output from 4.5 V to 5.5 V
- Selectable 500-kHz and 1.5-MHz Boost Converter with up-to 2.4-A Output
- 93% Boost Efficiency at 5 V at 1-A Output
- Accurate Hiccup Mode Overcurent Protection
- Single Input to Support USB Input and Adjustable High Voltage Adapters
- Support 3.9-V to 14-V Input Voltage Range
- Input Current Limit (100 mA to 3.25 A with 50-mA resolution) to Support USB2.0, USB3.0 Standard and High Voltage Adapters
- Maximum Power Tracking by Input Voltage Limit up-to 14 V for Wide Range of Adapters
- Auto Detect USB SDP, CDP, DCP, and Non-Standard Adapters (bq25890)
- Input Current Optimizer (ICO) to Maximize Input Power without Overloading Adapters
- Resistance Compensation (IRCOMP) from Charger Output to Cell Terminal
- Highest Battery Discharge Efficiency with 11-mΩ Battery Discharge MOSFET up to 9 A
- Integrated ADC for System Monitor
(Voltage, Temperature, Charge Current) - Narrow VDC (NVDC) Power Path Management
- Instant-On Works with No Battery or Deeply Discharged Battery
- Ideal Diode Operation in Battery Supplement Mode
- BATFET Control to Support Ship Mode, Wake Up, and Full System Reset
- Flexible Autonomous and I2C Mode for Optimal System Performance
- High Integration includes all MOSFETs, Current Sensing and Loop Compensation
- 12-μA Low Battery Leakage Current to Support Ship Mode
- High Accuracy
- ±0.5% Charge Voltage Regulation
- ±5% Charge Current Regulation
- ±7.5% Input Current Regulation
- Safety
- Battery Temperature Sensing for Charge and Boost Mode
- Thermal Regulation and Thermal Shutdown
- Create a Custom Design Using the bq25890 With the WEBENCH Power Designer and bq25892 With the WEBENCH Power Designer
