BQ24123
- Enhanced EMI Performance
- Integrated Power FETs For Up To 2-A Charge
Rate - Suitable For 1-, 2-, or 3-Cell Li-Ion and Li-Polymer
Battery Packs - Synchronous Fixed-Frequency PWM Controller
Operating at 1.1 MHz With 0% to 100% Duty
Cycle - High-Accuracy Voltage and Current Regulation
- Status Outputs For LED or Host Processor
Interface Indicates Charge-In-Progress, Charge
Completion, Fault, and AC-Adapter Present
Conditions - 20-V Absolute Maximum Voltage Rating on IN and
OUT Pins - Accurate High-Side Battery Current Sensing
- Battery Temperature Monitoring
- Automatic Sleep Mode for Low Power
Consumption - Reverse Leakage Protection Prevents Battery
Drainage - Thermal Shutdown and Protection
- Built-In Battery Detection
- Available in 20-pin 3.5-mm × 4.5-mm VQFN
Package
The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switched-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced QFN package.
The bqSWITCHER charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on user-selectable minimum current level. A programmable charge timer provides a safety backup for charge termination. The bqSWITCHER automatically restarts the charge cycle if the battery voltage falls below an internal threshold. The bqSWITCHER automatically enters sleep mode when VCC supply is removed.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | bq2412x Single-Chip Switched-Mode, Li-Ion, and Li-Polymer Charge-Management IC With Enhanced EMI Performance (bqSWITCHER™) datasheet (Rev. H) | PDF | HTML | 2015年 11月 30日 |
| User guide | Using the bq24120/3 (bqSwitcher)(TM) (Rev. A) | 2007年 11月 5日 | ||
| Application note | Implementations of Battery Charger and Power-Path Mgmt System Using bq241xx | 2006年 6月 6日 |
設計與開發
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BQ24123EVM-002 — bq24123 評估模組
The bq24123EVM-002 provides a convenient method for evaluating the performance of a charge management solution for portable applications using the bq24123. The charger can deliver up to 2 A of continuous output current and is programmed from the factory to deliver 1.33 A of charging (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHL) | 20 | 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。