Texas Instruments bq2589x 5A Switch-Mode Battery Charger ICs

Texas Instruments bq2589x 5A Switch-Mode Battery Charger ICs are highly-integrated battery charge management and system power path management devices for single cell Li-Ion and Li-polymer batteries. Each device supports high input voltage and adjustable voltage USB On-the-Go Boost Mode for fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I²C Serial interface with charging and system settings makes the device a truly flexible solution. Typical applications include smart phones, tablet PCs, and portable Internet devices.

Features

High efficiency 4A, 1.5MHz switch mode buck charge
- 92% Charge efficiency at 3A and 91% charge efficiency at 4A charge current
- Optimize for high voltage input (9V/12V)
- Low power PFM mode for light load operations
USB On-the-Go (OTG) with adjustable output from 4.5V to 5.5V
- Selectable 500KHz / 1.5MHz boost converter with up-to 2.4A output
- 94% Boost efficiency at 5V at 1A output
- Accurate hiccup mode overcurrent protection
Single input to support USB input and adjustable high voltage adapters
- Support 3.9V to 14V input voltage range
- Input current limit (100mA to 3.25A with 50mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
- Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
- Auto Detect USB SDP, CDP, DCP, and non-standard adapters (bq25898)
- Programmable D+/D- drivers for non-standard adapter handshake
Remote battery sensing
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 5mΩ battery discharge MOSFET up to 9A
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
12µA 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
Available in 2.8mm x 2.5mm 42-ball DSBGA package