BQ25892
- High efficiency 5-A, 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 to 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 and 1.5-MHz Boost Converter with up-to 2.4-A output
- 93% Boost efficiency at 5 V at 1-A output
- Accurate Hiccup Mode overcurent protection
- 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 14 V for wide range of adapters
- Auto detect USB SDP, CDP, DCP, and non-standard adapters (BQ25890)
- 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)
- Narrow VDC (NVDC) power path management
- Instant-on works with no battery or deeply discharged battery
- Ideal diode operation in Battery Supplement Mode
- 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 BQ25890, BQ25892 are 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.
技術文件
| 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 | BQ25890/2 I2C Controlled Single Cell 5-A Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode datasheet (Rev. D) | PDF | HTML | 2022/10/12 | ||
| 應用說明 | Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers | PDF | HTML | 2022/11/10 | |||
| 技術文章 | How to choose the right battery-charger IC for ultrasound point-of-care products | PDF | HTML | 2021/3/24 | |||
| 應用說明 | Extracting Maximum Power from an Adapter with Input Current Optimization Feature (Rev. C) | 2019/8/2 | ||||
| 應用說明 | Battery Charger Overload Protection in Boost Mode Operation | 2017/7/12 | ||||
| 類比設計期刊 | Faster, cooler charging with dual chargers | 2015/10/30 | ||||
| 類比設計期刊 | 4Q 2015 Analog Applications Journal | 2015/10/30 | ||||
| 應用說明 | Using the bq2589x ADC to Estimate Battery Temperature | 2015/5/4 | ||||
| 類比設計期刊 | Dynamic power management for faster, more efficient battery charging | 2013/10/28 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
BQ25892EVM-664 — BQ25892 完整充電器評估模組
BQSTUDIO — Battery Management Studio (bqStudio) 軟體
Battery Management Studio (bqStudio) 提供全套的強固工具，可協助評估、設計、配置、測試或使用 TI 電池管理產品的程序。其中包括可提供暫存器及資料記憶體完整存取的功能，包括支援即時觀看、繪圖和記錄、傳送命令的簡易介面、直接低階通訊和 I/O，以及用於配置、校準和執行學習週期的自動化和引導支援，進而產生實用的檔案，以利裝置投入生產。
在 bqStudio 中也支援舊產品，如 bq20xxx 和 bq30xxx。從適當的產品頁面下載特定的評估軟體。此外，您為 bqStudio 下載的最新化學更新程式需要 bqStudio 的更新版。
BQ25890SW-LINUX — 適用於 BQ25890 的 Linux 驅動程式
The Linux driver supports the BQ25890 5-A fast charger. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.
Linux mainline status
Available in Linux mainline: Yes
Available through git.ti.com: N/A
Linux source Files
The files associated with this (...)
TIDA-00538 — 採用 MaxCharge™ 技術的 1S 5A 快速充電器，可實現高 VIN 及可調式 USB OTG 升壓
bq25892 是一款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其他使用 USB 或高壓適配器的可攜式裝置應用中的單節鋰離子與鋰聚合物電池。其低阻抗電源路徑最佳化了開關模式運作效率，縮短了電池充電時間，並在放電階段延長了電池壽命。具有充電和系統設定功能的 I2C 序列介面使此裝置成為真正靈活的解決方案。
TIDA-00590 — 雙電池充電器 IC 參考設計尺寸（以 Cascode 配置連接）
最新的智慧型手機和平板電腦中容量更高的 1S 電池需要更高的充電電流才能更快地進行充電。 並聯配置採用 12V 電源與以串疊方式連接的兩個 5A 電池充電器 IC，可提供超過 5A 的充電電流。 此外，充電器功率損耗產生的熱量會分布到您的 PCB 上。
| 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。