BQ24050 具有自动 AC/USB 检测功能的 800mA 单输入单节锂离子电池充电器。 Rntc=10k
BQ24050 描述
The bq2405x series of devices are highly integrated Li-ion linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The bq2405x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hour safety timer.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded
|
BQ24050 |
BQ24052 |
BQ24055 |
| # Series Cells |
1 |
1 |
1 |
| Charge Current(Max)(A) |
0.8 |
0.8 |
0.8 |
| Charge Status Outputs |
2 |
2 |
2 |
| Control Topology |
CC/CV |
CC/CV |
CC/CV |
| Primary Charge Termination Method |
Program Term |
Program Term |
Program Term |
| Pin/Package |
10SON |
10SON |
12SON |
| Vin(Max)(V) |
4.45-6.45 |
4.45-6.45 |
4.45-6.45 |
| Battery Charge Voltage(V) |
4.2 |
4.2 |
4.2 |
| Optional Functions |
Li-Ion Charger |
Li-Ion Charger |
Li-Ion Charger |
BQ24050 特性
- CHARGING
- 1% Charge Voltage Accuracy
- 10% Charge Current Accuracy
- Pin Selectable USB 100mA and 500mA Maximum Input Current Limit
- Programmable Termination and Precharge Threshold
- PROTECTION
- 30V Input Rating; with 6.6V Input Overvoltage Protection
- Input Voltage Dynamic Power Management
- 125°C Thermal Regulation; 150°C Thermal Shutdown Protection
- OUT Short-Circuit Protection and ISET short detection
- Operation over JEITA Range via Battery NTC - 1/2 Fast-Charge-Current at Cold, 4.06V at Hot
- Fixed 10 Hour Safety Timer
- SYSTEM
- Auto Input Source Detection (D+,D– Pins)No Device Transceiver RequiredUSB Friendly
- Automatic Termination and Timer Disable Mode (TTDM) for Absent Battery Pack With Thermistor
- Status Indication – Charging/Done
- Available in Small 2×2mm2 DFN-10 or 2×3mm2 DFN-12 Packages
- APPLICATIONS
BQ24050 芯片订购指南
| 器件 |
状态 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| BQ24050DSSR |
ACTIVE |
1.45 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
CGU |
| BQ24050DSST |
ACTIVE |
1.70 | 1ku |
SON (DRC) | 10 |
250 | SMALL T&R |
CGU |
BQ24050 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 |
| BQ24050DSSR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24050DSSR |
BQ24050DSSR |
| BQ24050DSST |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24050DSST |
BQ24050DSST |
BQ24050 应用技术支持与电子电路设计开发资源下载
- BQ24050 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)
BQ24050 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| BQ24050 评估模块：0.8A 单输入单节锂离子电池充电器 |
BQ24050EVM |
Texas Instruments |
开发电路板/EVM |
| BQ24050 评估模块 |
BQ24050EVM-114 |
Texas Instruments |
开发电路板/EVM |
| BQ24050 评估模块 |
BQ24050EVM-185 |
Texas Instruments |
开发电路板/EVM |