BQ25618E, BQ25619E I²C Controlled 1-Cell 1.5A Battery Chargers with 20mA Termination Current

1 Features

High-efficiency, 1.5MHz, synchronous Switch Mode buck charger
- 95.5% charge efficiency at 0.5A and 94.5% efficiency at 1A
- ±0.5% charge voltage regulation (10mV step)
- I²C programmable JEITA profile of charge voltage, current and temperature thresholds
- Low termination current with high accuracy 20mA±10mA
- Small inductor form factor of 2.5 x 2.0 x 1.0mm³
Single input supporting USB input, high-voltage adapter, or wireless power
- Support 4V to 13.5V input voltage range with 22V absolute max input rating
- Programmable input current limit (IINDPM) with I²C (100mA to 3.2A, 100mA/step)
- Maximum power tracking by input voltage limit (VINDPM) up to 5.4V
- VINDPM threshold automatically tracks battery voltage
Narrow voltage DC (NVDC) power path management
- System instant-on with no battery or deeply discharged battery
Flexible I²C configuration and autonomous charging for optimal system performance
High integration includes all MOSFETs, current sensing and loop compensation
Low R_DSON 19.5mΩ BATFET to minimize charging loss and extend battery run time
- BATFET control for Ship Mode, and full system reset with and without adapter
7µA low battery leakage current in Ship Mode
9.5µA low battery leakage current with system standby
High accuracy battery charging profile
- ±6% charge current regulation
- ±7.5% input current regulation
- Remote battery sensing to charge faster
- Programmable top-off timer for full battery charging