BQ24091
- Charging
- 1% charge voltage accuracy
- 10% charge current accuracy
- Pin selectable USB 100-mA and 500-mA maximum input current limit
- Programmable termination and precharge threshold
- Protection
- 6.6-V overvoltage protection
- Input voltage dynamic power management
- 125°C thermal regulation; 150°C thermal shutdown protection
- OUT short-circuit protection and ISET short detection
- Operation over JEITA range via battery NTC – ½ fast-charge-current at cold, 4.06 V at hot, BQ092/3
- Fixed 10-hour safety timer
- System
- Automatic Termination and Timer Disable Mode (TTDM) for absent battery pack with thermistor
- Status indication – charging/done
- Available in a small 10-pin MSOP package
The BQ2409x series of devices are highly integrated Li-ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The BQ2409x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10-hour safety timer.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded.
The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The pre-charge current and termination current threshold are programmed via an external resistor. The fast charge current value is also programmable via an external resistor.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ2409x 1-A, Single-Input, Single-Cell Li-Ion and Li-Pol Battery Chargers datasheet (Rev. H) | 2021年 4月 27日 | |
| Application note | BQ2404x, BQ2405x, and BQ2409x Frequently Asked Questions | 2019年 2月 25日 | ||
| Application note | Building your own Battery Simulator | 2013年 10月 14日 | ||
| User guide | 1.0-A Single-Input, Single-Cell Li-Ion Battery Charger . | 2012年 12月 31日 | ||
| Application note | Selecting the Best bq2404x/5x/9x Single Cell Battery Charger for your Applicatio | 2012年 11月 29日 | ||
| User guide | 1.0-A Single-Input, Single-Cell Li-Ion Battery Charger (Rev. A) | 2010年 6月 7日 |
設計與開發
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TIDA-00043 — 1A 單路輸入、單節鋰離子和鋰聚合物電池充電器參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 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。