BQ24765 具有集成 FET 的 SMBus 控制的电池充电器
|
BQ24765 |
| # Series Cells |
1-4 |
| Charge Current(Max)(A) |
8.064 |
| Charge Status Outputs |
1 |
| Control Topology |
Switchmode |
| Switching Frequency(kHz) |
700 |
| Pin/Package |
34VQFN |
| Vin(Max)(V) |
24 |
| Battery Charge Voltage(V) |
1.024 to 19.2 |
| Optional Functions |
Integrated FETs |
BQ24765 描述
The bq24765 is a high-efficiency, synchronous battery charger with two integrated 30mΩ NMOS power MOSFETs, and an integrated input current comparator, offering low component count for space-constraint, multi-chemistry battery charging applications. Input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller using SMBus. The bq24765 has switching frequency of 700kHz. The bq24765 charges 2, 3, or 4 series Li+ cells, and is available in a 34-pin, 3.5mmx7mm QFN package.
The bq24765 features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adaptor when supplying the load and the battery charger simultaneously
BQ24765 特性
- Integrated Power MOSFETs, NMOS-NMOS, Synchronous Buck Converter
- >95% Efficiency
- Frequency 700kHz Allows Smaller Inductor (5mm x 5mm)
- Thermal Regulation Loop for Safety, Limit TJ = 120°C
- Adaptive Driver Dead-time and 99.5% Maximum Effective Duty Cycle
- High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- ±2% Input Current Sense Amp Accuracy
- Integration
- Integrated Power MOSFETs
- Input Current Comparator
- Internal Soft-Start
- Safety
- Thermal Regulation Loop and Thermal Shutdown
- Dynamic Power Management (DPM)
- Power FETs Over Current Protection
- 7 V–24 V AC/DC-Adapter Operating Range
- Simplified SMBus Control
BQ24765 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| BQ24765RUVR |
ACTIVE |
-40 to 155 |
3.95 | 1ku |
VQFN (RUV) | 34 |
3000 | LARGE T&R |
BQ24765 |
| BQ24765RUVT |
ACTIVE |
-40 to 155 |
4.55 | 1ku |
VQFN (RUV) | 34 |
250 | SMALL T&R |
BQ24765 |
BQ24765 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| BQ24765RUVR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24765RUVR |
BQ24765RUVR |
| BQ24765RUVT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24765RUVT |
BQ24765RUVT |
BQ24765 应用技术支持与电子电路设计开发资源下载
- BQ24765 数据资料 dataSheet 下载.PDF
- TI 德州仪器电池管理产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- QFN Layout Guidelines (PDF 1279 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
BQ24765 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| BQ24765 评估模块，适用于具有集成 FET 的 SMBus 控制的电池充电器 |
BQ24765EVM |
Texas Instruments |
开发电路板/EVM |
| BQ24765 评估模块 |
BQ24765EVM-003 |
Texas Instruments |
分析软件 |