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
Boost Mode operation with adjustable output from 4.5 V to 5.5 V
- Selectable 500-KHz to 1.5-MHz boost converter with up to 3.1-A output
- 93% Boost efficiency at 5 V at 1 A output
Integrated control to switch between charge and Boost Mode
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 14V for wide range of adapters
- Auto detect USB SDP, CDP, DCP, and Non-standard Adapters
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

Description for the BQ25895

The BQ25895 is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase.

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