Overview
The BQ25616RTWR from Texas Instruments is a highly integrated standalone 1-cell 3.0-A buck battery charger with power path and 1.2-A boost operation. This device is designed for single-cell Li-ion and Li-polymer batteries, offering high efficiency and comprehensive power management features. It includes all necessary MOSFETs, current sensing, and loop compensation, making it a robust solution for various portable and industrial applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (VVBUS) | 4 | - | 13.5 | V |
| Battery Voltage (VBAT) | - | - | 4.35 | V |
| Input Current (IVBUS) | - | - | 3.2 | A |
| Fast Charging Current (IBAT) | - | - | 3 | A |
| Ambient Temperature (TA) | -40 | - | 85 | °C |
| Battery FET On-Resistance (RON_BATFET) | 19.5 | - | 30 | mΩ |
| Quiescent Battery Current (IQ_BAT) | - | - | 9.5 | µA |
Key Features
- High-efficiency, 1.5-MHz, synchronous switch-mode buck charger with up to 92% charge efficiency at 2 A from a 5-V input.
- Programmable input current limit (IINDPM) with ILIM pin and VINDPM threshold that automatically tracks battery voltage for maximum power.
- Auto detection of USB SDP, CDP, DCP, and non-standard adapters.
- Narrow VDC (NVDC) power path management for 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.
- Low battery leakage current of 9.5 µA in system standby.
- High integration includes all MOSFETs, current sensing, and loop compensation.
- Safety-related certifications: IEC 62368-1 CB Certification.
Applications
- Electronic Point of Sale (EPOS) devices.
- Wireless speakers.
- Industrial and medical portable electronics.
Q & A
- What is the maximum input voltage for the BQ25616RTWR?
The maximum input voltage for the BQ25616RTWR is 13.5 V.
- What is the fast charging current capability of the BQ25616RTWR?
The BQ25616RTWR can support a fast charging current of up to 3 A.
- What is the quiescent battery current of the BQ25616RTWR?
The quiescent battery current is 9.5 µA.
- Does the BQ25616RTWR support USB adapter detection?
- What safety certifications does the BQ25616RTWR have?
The BQ25616RTWR has IEC 62368-1 CB Certification.
- What is the on-resistance of the battery FET (BATFET)?
The on-resistance of the BATFET is typically 19.5 mΩ.
- How does the BQ25616RTWR manage power path?
The device features Narrow VDC (NVDC) power path management for system instant-on with no battery or deeply discharged battery.
- What is the operating temperature range of the BQ25616RTWR?
The operating temperature range is from -40°C to 85°C.
- Does the BQ25616RTWR support external OVPFET?
- How does the BQ25616RTWR indicate charging status?
The STAT output reports the charging status and any fault conditions.
