Overview
The BQ25896RTWR is a highly-integrated 3-A switch-mode battery charge management and system power path management device designed by Texas Instruments. It is specifically tailored for single cell Li-Ion and Li-polymer batteries, offering fast charging capabilities with high input voltage support. This device is ideal for a wide range of applications, including smartphones, tablets, and other portable devices. The BQ25896RTWR features a low impedance power path that optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery life during the discharging phase. It also integrates various safety features and advanced control mechanisms, making it a flexible and reliable solution for battery management.
Key Specifications
| Parameter | Description |
|---|---|
| Charge Current | Up to 3 A |
| Charge Efficiency | 92.5% at 2 A, 90.5% at 3 A |
| Input Voltage Range | 3.9 V to 14 V |
| Switching Frequency | 1.5 MHz |
| Battery Regulation Voltage | ±0.5% accuracy |
| Charge Current Regulation | ±5% accuracy |
| Input Current Regulation | ±7.5% accuracy |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 24-pin WQFN (4x4 mm) |
| Low Battery Leakage Current | 12 µA |
Key Features
- High-efficiency 3-A, 1.5-MHz switch-mode buck charge
- Optimized for high input voltage (9 V / 12 V)
- Low power PFM mode for light load operations
- USB On-the-Go (OTG) with adjustable output from 4.5 V to 5.5 V
- Selectable 500-KHz / 1.5-MHz boost converter with up to 2 A output
- Accurate hiccup mode overcurrent protection
- Support for deeply discharged batteries and ship mode
- Ideal diode operation in battery supplement mode
- BATFET control for 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
- Battery temperature sensing for charge and boost mode
- Thermal regulation and thermal shutdown
Applications
The BQ25896RTWR is commonly used in various portable electronic devices, including:
- Smartphones
- Tablet PCs
- Portable internet devices
- Power banks and other handheld devices
These applications benefit from the device's fast charging capabilities, high efficiency, and comprehensive power management features.
Q & A
- What is the maximum charge current of the BQ25896RTWR?
The maximum charge current is up to 3 A.
- What is the input voltage range of the BQ25896RTWR?
The input voltage range is from 3.9 V to 14 V.
- What is the switching frequency of the BQ25896RTWR?
The switching frequency is 1.5 MHz.
- Does the BQ25896RTWR support USB On-the-Go (OTG) functionality?
- What safety features does the BQ25896RTWR include?
- What is the package type of the BQ25896RTWR?
- How does the BQ25896RTWR manage power path?
- Does the BQ25896RTWR support deeply discharged batteries?
- What is the low battery leakage current of the BQ25896RTWR?
- How does the BQ25896RTWR communicate with the system?
