BQ25171-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C ≤ TA ≤ 125°C
- HBM ESD classification level 2
- CDM ESD classification level C4B
- 40-V load-dump tolerant to support charging back-up battery directly from main battery, 3-V to 18-V operating
- Automatic Sleep Mode for low power consumption
- 350-nA battery leakage current
- 2-µA input leakage current when charge disabled
- Support multi-chemistry battery
- 1- to 2-cell Li-Ion, Li-Poly, and LiFePO4
- 1- to 6-cell NiMH with intermittent-charging support
- External resistor programmable operation
- VSET to set battery regulation voltage from 3.5 V to 8.4 V for Li-Ion, or 1- to 6-cell for NiMH
- ISET to set charge current from 10 mA to 800 mA
- CHM_TMR to set battery chemistry as Li+ or NiMH, and charge timer duration
- High accuracy
- ±0.5% charge voltage accuracy
- ±10% charge current accuracy
- Charging features
- Precharge current 20% of ISET
- Termination current 10% of ISET
- NTC thermistor input to monitor battery temperature
- CE pin for charging function control
- Two Open-drain output for status and fault indication
- Integrated fault protection
- 18-V IN overvoltage protection
- VSET based OUT overvoltage protection
- 1000-mA overcurrent protection
- 125°C thermal regulation; 150°C thermal shutdown protection
- OUT short-circuit protection
- VSET, ISET, CHM_TMR pins short/open protection
The BQ25171-Q1 is an automotive rated, 800-mA linear charger for 1-cell and 2-cell Li-Ion, Li-Polymer, and LiFePO4, in addition to 1-cell up to 6-cell NiMH battery applications.The device has a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from charging fully within the safety timer duration. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.
The device has three phases for charging a Li-Ion battery: precharge to recover a fully discharged battery, fast-charge constant current to supply the bulk of the charge, and voltage regulation to reach full capacity.
The device charges a NiMH in constant current mode only, and terminates the charge cycle when the programmable timer expires or the battery voltage exceeds the VOUT_OVP threshold.In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold, TREG, is exceeded.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25171-Q1: Automotive, Standalone 800-mA Linear Battery Charger for 1- to 2-Cell Li-Ion, LiFePO4, and 1- to 6-Cell NiMH datasheet (Rev. A) | PDF | HTML | 2021年 3月 29日 |
| White paper | 解決 Nano IQ 系統的性能挑戰 (Rev. A) | PDF | HTML | 2024年 3月 25日 | |
| Application note | Wireless Power Solutions for Battery Chargers | PDF | HTML | 2023年 4月 20日 | |
| Application note | Multi-Chemistry Charger in Low Battery Power Applications | PDF | HTML | 2022年 11月 17日 | |
| Application note | BQ25171-Q1 Quick Start Guide | PDF | HTML | 2021年 9月 29日 | |
| EVM User's guide | BQ25171EVM User's Guide (Rev. B) | 2021年 7月 16日 |
設計與開發
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BQ25171EVM — 適用於 1-2 芯鋰離子電池、LiFePO4、1-6 芯鎳氫電池的 BQ25171 評估模組 800-mA 線性電池充電器
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRC) | 10 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。