TI BQ25616RTWR

The BQ25616/616J is a highly integrated 3-A switchmode battery charge management and system power path management device for single cell LiIon and Li-polymer batteries. The solution is highly integrated with input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), lowside switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery run time during discharging phase.

The BQ25616/616J is a highly integrated 3-A switchmode battery charge management and system Power Path management device for Li-ion and Li-polymer batteries. It features fast charging with high input voltage support for a wide range of applications including speakers, industrial, and medical portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery run time during discharging phase. Its input voltage and current regulation deliver maximum charging power to the battery.

The solution is highly integrated with input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. It also integrates the bootstrap diode for the high-side gate drive for simplified system design. The hardware setting and status report provides easy configuration to set up the charging solution.

The device supports a wide range of input sources, including standard USB host port, USB charging port, USB compliant high voltage adapter and wireless power. It is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation.

• High-efficiency, 1.5-MHz, synchronous switchmode 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-V boost 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 RDSON 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

• Electronic Point of Sale (EPOS)
• Wireless speaker
• Industrial, medical, portable electronics