BQ25616/616J Standalone 1-Cell 3.0-A Buck Battery Charger with Power Path and 1.2-A Boost Operation

1 Features

High-efficiency, 1.5-MHz, synchronous switch-mode buck charger
- 92% charge efficiency at 2 A from 5-V input
- ±0.5% charge voltage regulation
- Adjustable charge voltage from VSET pin supports 4.1 V, 4.2 V, and 4.35 V with ±0.4% regulation accuracy
- ±6% charge current regulation
- ±7.5% input current regulation
- Supports JEITA (BQ25616J) or Hot/Cold (BQ25616) temperature sensing profile
- 10-hr charging safety timer
Support USB On-The-Go (OTG)
- 5-Vboost 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
- PFM mode for light load operation
Single input supporting USB input, high-voltage adapter, or wireless power
- Support 4-V to 13.5-V input voltage range with 22-V absolute max input rating
- 130-ns fast turn-off input overvoltage protection with optional external OVPFET standing input voltage up to 30 V
- Programmable input current limit (IINDPM) with ILIM pin
- VINDPM threshold automatically tracks battery voltage for maximum power
- Auto detect USB SDP, CDP, DCP and nonstandard adaptors
Narrow VDC (NVDC) power path management
- System instant-on with no battery or deeply discharged battery
Low R_DSON 19.5-mΩ BATFET to minimize charging loss and extend battery run time
9.5-µA low battery leakage current with system standby
High integration includes all MOSFETs, current sensing and loop compensation
Safety Related Certifications:
- IEC 62368-1 CB Certification