BQ25872
- Adapter Input Voltage Range: 3 V to 14 V
- Allow up to 14-V Adaptor Voltage
- Highly Integrated 7-A Battery Switch
- Integrated MOSFETs and Current Sensing
- Low RDS(on) (13-mΩ) MOSFETs for High Current Operation
- Integrated High Accuracy ADC for System Monitor
- VBUS, VBAT, VOUT, VDROP Voltage
- Input and Battery Current
- Battery and VBUS Connector Temperature
- Linear Regulation (LDO) Mode Operation
- Four Linear Regulation Loops: IBUS, IBAT, VBAT and VOUT
- Programmable Linear Regulation Thresholds
- Programmable Safety Protections
- VBUS, VOUT, and VBAT Over Voltage Protections (OVP)
- IBUS and IBAT Over Current Protection (OCP)
- IBUS Reverse Current Protection (RCP)
- VDROP (VBUS-VOUT) OVP
- VBUS Connector and Battery Thermal Protection
- Thermal Shutdown
- Interrupt Status Output For Host Processor Alert
- Up To 1-MHz I2C Read and Write Speed
- Low Battery Leakage Current in Battery Only Mode
- WCSP Package for Small Footprint
The device is a 7-A battery switch charger with an integrated 10-bit ADC. The high-current battery switch charger is a 13-mΩ MOSFET with reverse current blocking designed for high efficiency and minimal voltage drop. The high-charge current capability of the device makes it ideal for smartphones, tablets, and other portable devices with large battery capacity.
The integrated 10-bit ADC can measure input voltage and current, battery voltage and current, as well as battery temperature and input connector temperature. This allows the user application to continuously monitor the power input and battery charging parameters to ensure the safety of the battery charging. The flexible OVP and OCP thresholds for VBUS, VOUT, and battery can be modified via I2C registers as the battery goes through constant current (CC) and constant voltage (CV) mode.
The I2C serial interface of the device can operate at speeds up to 1 MHz and allows access to the ADC’s measurements of the different charging parameters and also allows for flexible software control of the device. The INT pin provides instantaneous feedback to the host in case of a fault condition. I2C status registers allow the host to read the current status of all faults and events.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | bq25872 14-V, 7-A, Battery Switch Charger with Integrated 10-bit ADC datasheet | PDF | HTML | 2016年 9月 1日 |
| Application note | 具有高效率电荷泵（Charge Pump Charger）充电系统介绍 | 2018年 8月 6日 | ||
| Application note | Flash Battery Charging Pushes the Boundary of Charging Current | 2017年 3月 15日 |
設計與開發
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BQ25872EVM-813 — BQ25872 完整充電器評估模組
bq25872 評估模組 (EVM) 是一款完整的充電器模組，適合評估採用 WCSP 封裝的高度整合電池交換器，適用於各種智慧型手機和平板電腦應用中的單芯鋰離子與鋰聚合物電池。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 42 | 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