BQ25619
- Single chip solution to charge wearable accessories from adapter or battery
- High-efficiency, 1.5MHz, synchronous switch-mode buck charger
- 95.5% charge efficiency at 0.5A and 94.5% efficiency at 1A
- ±0.5% charge voltage regulation (10mV step)
- I2C programmable JEITA profile of charge voltage, current and temperature thresholds
- Low termination current with high accuracy 20mA±10mA
- Small inductor form factor of 2.5 x 2.0 x 1.0mm3
- Boost mode with output from 4.6V to 5.15V
- 94% boost efficiency at 1A output
- Integrated control to switch between Charge and Boost mode
- PMID_GOOD pin control external PMOS FET for protection against fault conditions
- Single input supporting USB input, high-voltage adapter, or wireless power
- Support 4V to 13.5V input voltage range with 22V absolute max input rating
- Programmable input current limit (IINDPM) with I2C (100mA to 3.2A, 100mA/step)
- Maximum power tracking by input voltage limit (VINDPM) up to 5.4V
- VINDPM threshold automatically tracks battery voltage
- Narrow VDC (NVDC) power path management
- System instant-on with no battery or deeply discharged battery
- Flexible I2C configuration and autonomous charging for optimal system performance
- High integration includes all MOSFETs, current sensing and loop compensation
- Low RDSON 19.5mΩ BATFET to minimize charging loss and extend battery run time
- BATFET control for Ship mode, and full system reset with and without adapter
- 7µA low battery leakage current in Ship mode
- 9.5µA low battery leakage current with system standby
- High accuracy battery charging profile
- ±6% charge current regulation
- ±7.5% input current regulation
- Remote battery sensing to charge faster
- Programmable top-off timer for full battery charging
- Safety Related Certifications:
- IEC 62368-1 CB Certification
The BQ25618/619 integrates charge, boost converter and voltage protection in a single device. It offers the industry’s lowest termination current for switching chargers to charge wearable devices by full battery capacity. The BQ25618/619 best-in-class low quiescent current reduces battery leakage down to 6uA in Ship mode, which conserves battery energy to double the shelf life for the device. The BQ25619 is in a 4mm × 4mm QFN package for easy layout. The BQ25618 is in a 2.0mm × 2.4mm WCSP package for space limited design.
技術文件
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檢視所有 8 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25618/619 I2C Controlled 1-Cell 1.5A Battery Charger with 20mA Termination and 1A Boost Operation datasheet (Rev. E) | PDF | HTML | 2024年 7月 22日 |
| Application note | High-Efficiency Charging for TWS Using a 2-Pin Interface Application Report (Rev. A) | PDF | HTML | 2023年 5月 16日 | |
| Application note | Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers | PDF | HTML | 2022年 11月 10日 | |
| User guide | BQ25611D, BQ25619 (BMS025) Evaluation Module User's Guide (Rev. C) | PDF | HTML | 2022年 7月 1日 | |
| Technical article | Benefits of rechargeable batteries in real-time location system trackers | PDF | HTML | 2020年 8月 10日 | |
| Technical article | Overcoming common design challenges in an UV sterilization box system | PDF | HTML | 2020年 7月 27日 | |
| Application brief | How to Design Tiny, Long-Lasting, and Safe Battery Products With Switching Charg | 2019年 8月 29日 | ||
| Technical article | Overcoming design challenges for low quiescent current in small, battery-powered d | PDF | HTML | 2019年 8月 29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)。
開發板
BQ25619EVM — 具有電源路徑和 1.2-A 升壓操作的 I2C 控制單芯、3-A 降壓電池充電器評估模組
The BQ25619 evaluation module (EVM) is used to evaluate the BQ25619 device. This is a 3-A single-cell battery charger optimized for power bank applications in low-power portable designs. The OTG reverse synchronous boost operation and forward buck mode operation allows for control over power (...)
驅動程式或資料庫
BQ256XXSW-LINUX — 適用 BQ256XX 的 Linux 驅動程式
The Linux driver supports the BQ256XX family of I2C Controlled, 1-cell, switch-mode battery charge management and system power path management ICs. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.
Linux mainline status
Available in Linux (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTW) | 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
- 進行中持續性的可靠性監測
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。