BQ77307
- Primary or secondary voltage, current, and temperature protection for 2-series to 7-series cells with an autonomous recovery option
- Voltage protection:
- Cell overvoltage (COV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy
- Cell undervoltage (CUV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy
- Current protection:
- Short circuit in discharge (SCD): 10 mV–500 mV, varying steps
- Overcurrent in charge (OCC): 3 mV–123 mV, 2-mV steps
- Overcurrent in discharge 1 and 2 (OCD1 and OCD2): 4 mV–200 mV, 2-mV steps
- Temperature protection using external NTC thermistor:
- Overtemperature in charge and discharge (OTC and OTD)
- Undertemperature in charge and discharge (UTC and UTD)
- Internal die overtemperature
- Integrated low-side drivers for NFET protection with an optional autonomous recovery
- Low power operation:
- NORMAL mode, both FETs enabled: 8 µA
- NORMAL mode, FETs disabled: 5 µA
- SHUTDOWN Mode: < 1 µA
- High voltage tolerance of 45 V on cell connect and select additional pins
- Integrated one-time-programmable (OTP) memory for device settings, programmed by TI
- Programmable interrupt for host processor, status information available through I 2C
- 400-kHz I 2C serial communications with optional CRC support
- Programmable LDO for external system usage
- 20-pin QFN 3.5 mm × 3.5 mm × 0.9 mm (RGR) package
The Texas Instruments BQ77307 family of products features a highly integrated,high-accuracy primary protector for 2-series to 7-series Li-ion, Li-polymer, LiFePO 4 (LFP), and LTO battery packs. Each device includes a high-accuracy voltage, current, and temperature protection subsystem with integrated low-side protection NFET drivers and a programmable LDO for external system use. The BQ77307 provides an interrupt to a host processor and integrates an I 2C host communication interface, supporting up to 400-kHz operation with optional CRC to read status information and program settings. The BQ77307 is available in a 20-pin QFN package.
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 | BQ77307 2-Series to 7-Series High Accuracy Battery Primary or Secondary Protector for Li-Ion, Li-Polymer, LiFePO4(LFP), and LTO Battery Packs datasheet | PDF | HTML | 2023/12/5 | ||
| * | 使用指南 | BQ77307 Technical Reference Manual | PDF | HTML | 2023/12/6 |
設計與開發
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BQSTUDIO-TEST — Battery Management Studio (bqStudio) Software – Beta version downloads
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。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGR) | 20 | 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。