BQ24312 过压和过流保护 IC 和锂离子充电器前端保护
BQ24312 描述
The bq24312 is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage, the input current, and the battery voltage. In case of an input overvoltage condition, the IC immediately removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the system current at the threshold value, and if the overcurrent persists, switches the pass element OFF after a blanking period. Additionally, the IC also monitors its own die temperature and switches off if it exceeds 140°C. The input overcurrent threshold is user-programmable.
The IC can be controlled by a processor and also provides status information about fault conditions to the host
|
BQ24312 |
| Input Voltage(Max)(V) |
30 |
| Input Over-Voltage Protection(V) |
5.85 |
| Input Over-Current Protection(A) |
1.5 |
| Battery Over-Voltage Protection(Max)(V) |
4.4 |
| Battery Over-Voltage Protection(Typ)(V) |
4.35 |
| Optional Functions |
OVP Threshold = 5.85V |
BQ24312 特性
- Provides Protection for Three Variables:
- Input Overvoltage Protection
- User-Programmable Overcurrent with Current Limiting
- Battery Overvoltage
- 30V Maximum Input Voltage
- Supports up to 1.5A Input Current
- Robust Against False Triggering Due to Current Transients
- Thermal Shutdown
- Enable Input
- Status Indication - Fault Condition
- Available in Space-Saving Small 8 Lead 2×2 SON
- APPLICATIONS
- Mobile Phones and Smart Phones
- PDAs
- MP3 Players
- Low-Power Handheld Devices
- Bluetooth Headsets
BQ24312 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 |
| BQ24312DSGR |
ACTIVE |
-40 to 125 |
0.55 | 1ku |
WSON (DSG) | 8 |
3000 | LARGE T&R |
|
| BQ24312DSGT |
ACTIVE |
-40 to 125 |
0.65 | 1ku |
WSON (DSG) | 8 |
250 | SMALL T&R |
|
BQ24312 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 |
| BQ24312DSGR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24312DSGR |
BQ24312DSGR |
| BQ24312DSGT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24312DSGT |
BQ24312DSGT |
BQ24312 应用技术支持与电子电路设计开发资源下载
- BQ24312 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)
BQ24312 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| BQ24312 评估模块 |
BQ24312EVM |
Texas Instruments |
开发电路板/EVM |