BQ25050
- 30V input Rating, With 10.5V Over-Voltage Protection (OVP)
- FET Controller for External Battery FET for External Power Path Control (BGATE)
- Input Voltage Dynamic Power Management
- 50mA integrated Low Dropout Linear Regulator (LDO)
- Programmable Charge Current Through Single Input Interface (CTRL)
- 0.5% Battery Voltage Regulation Accuracy
- 7% Charge Current Regulation Accuracy
- Thermal Regulation and Protection
- Battery NTC Monitoring During Charge and Discharge
- Status Indication – Charging/Done and Temperature Faults
- Available in small 2mm × 3mm 10 Pin SON Package
- APPLICATIONS
- Smart Phones
- Mobile Phones
- Portable Media Players
- Low Power Handheld Devices
The bq25050 is a highly integrated Li-Ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC Adapter and charges a single-cell Li-Ion battery with up to 1A of charge current. The 30V input voltage range with input over-voltage protections supports low-cost unregulated adapters.
The bq25050 has a single power output that charges the battery. The system load is connected to OUT. The low-battery system startup circuitry maintains OUT greater than 3.4V whenever an input source is connected. This allows the system to start-up and run whenever an input source is connected regardless of the battery voltage. The charge current is programmable up to 1A using the CTRL input. Additionally, a 4.9V 50mA LDO is integrated into the IC for supplying low power external circuitry.
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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | 1A, Single-Input, Single Cell Li-Ion Battery Charger with 50-mA LDO and Minimum datasheet | 2010年 3月 25日 | |
| EVM User's guide | bq25050/bq25060EVM User's Guide | 2010年 7月 21日 |
設計與開發
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BQ25050EVM — 具有 50mA LDO 的 BQ25050 1A、單輸入、單芯鋰離子電池充電器的評估模組
The bq25050EVM assists users in evaluating the bq25050 linear battery chargers. The User's Guide manual includes the bq25050EVM bill of materials, board layout, and schematic. The bq25050/60 is a highly integrated Li-Ion linear battery charger targeted at space-limited portable applications. It (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DQC) | 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。