BQ25895M
- High efficiency 1.5-MHz switch mode buck charge
- 93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge current
- Optimize for high voltage input (9 V / 12 V)
- Low power PFM mode for light load operations
- Boost mode operation with adjustable
output from 4.5 V to 5.5 V
- Selectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output
- 93% Boost efficiency at 5 V at 1 A output
- Support down-to 2.5V battery
- Support PWM only or PFM/PWM control for light load efficiency
- Integrated control to switch between charge and boost mode
- Single input to support USB input and adjustable high voltage adapters
- Support 3.9-V to 14-V input voltage range
- Input current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
- Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
- Auto detect USB SDP, CDP, DCP, and non-standard adapters
- Input current optimizer (ICO) to maximize input power without overloading adapters
- Resistance compensation (IRCOMP) from charger output to cell terminal
- Highest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 A
- Integrated ADC for system monitor (voltage, temperature, charge current)
- BATFET Control to support 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
- 12-µA Low battery leakage current to support ship mode
- High accuracy
- ±0.5% Charge voltage regulation
- ±5% Charge current regulation
- ±7.5% Input current regulation
- Safety
- Battery temperature sensing for charge and boost mode
- Thermal regulation and thermal shutdown
The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.
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| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | BQ25895M I2C Controlled Single Cell Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage 3.1 A Boost Operation datasheet (Rev. C) | PDF | HTML | 2022/10/17 | ||
| 應用說明 | Extracting Maximum Power from an Adapter with Input Current Optimization Feature (Rev. C) | 2019/8/2 | ||||
| 應用說明 | Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) | 2018/5/1 | ||||
| 應用說明 | Battery Charger Overload Protection in Boost Mode Operation | 2017/7/12 | ||||
| 應用說明 | Port Detection for Power Banks | 2016/4/8 | ||||
| 應用說明 | Using the bq2589x ADC to Estimate Battery Temperature | 2015/5/4 | ||||
| 類比設計期刊 | Extract maximum power from the supply when charging a battery | 2014/4/11 | ||||
| 類比設計期刊 | Dynamic power management for faster, more efficient battery charging | 2013/10/28 |
設計與開發
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開發板
BQ25895MEVM-664 — bq25895M 完整充電器評估模組
bq25895M 評估模組 (EVM) 是一款完整的充電器模組，用於評估高度整合的開關模式電池充電管理與系統電源路徑管理裝置，適用於各類智慧型手機與平板電腦應用中的單節鋰離子與鋰聚合物電池。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTW) | 24 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。