計算工具
BQ24618
- USB-Friendly 4.7-V to 28-V Input Operating
Range - Stand-Alone Charge Controller to Support 1 to 6
Li-Ion or Li-Polymer Battery Cells - Up to 10-A Charge Current and Adapter Current
- 600-kHz NMOS-NMOS Synchronous Buck
Converter - High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- Integration
- Automatic System Power Selection From
Adapter or Battery - Internal Loop Compensation
- Internal Soft Start
- Dynamic Power Management
- Automatic System Power Selection From
- Safety Protection
- Input Overvoltage Protection
- Battery Thermistor Sense Hot/Cold Charge
Suspend - Battery Detection
- Reverse-Protection Input FET
- Programmable Safety Timer
- Charge Overcurrent Protection
- Battery Short Protection
- Battery Overvoltage Protection
- Thermal Shutdown
- Status Outputs
- Adapter Present
- Charger Operation Status
- Charge Enable Pin
- 6-V Gate Drive for Synchronous Buck Converter
- 30-ns Driver Dead-Time and 99.5% Maximum
Effective Duty Cycle - Energy Star Low Quiescent Current Iq
- < 15-µA Off-State Battery Discharge Current
- < 1.5-mA Off-State Input Quiescent Current
- APPLICATIONS
- Tablet PCs
- Smart Phones
- Portable Media Players, Navigation Devices,
Notebooks and Ultra-Mobile PCs - Personal Digital Assistants
- Handheld Terminals
- Industrial and Medical Equipment
All other trademarks are the property of their respective owners
The bq24618 device is highly integrated Li-ion or Li-polymer switched-mode battery-charge controller. The bq24618 offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation and charge status monitoring.
The bq24618 operates from either a USB port or AC adapter and supports charge currents up to 10 A. The device charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup for charge termination. The bq24618 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.
技術文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 2 | 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | bq24618 Stand-Alone USB-Friendly Synchronous Switched-Mode Li-Ion or Li-Polymer Battery Charger With System Power Selector and Low Iq datasheet (Rev. B) | PDF | HTML | 2015年 4月 29日 |
| Application note | BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers | 2019年 12月 31日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
訂購與品質
內含資訊：
- 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
- 進行中的可靠性監測
內含資訊：
- 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。