BQ24079T USB 供能的 1.5A 锂离子电池充电器和电源路径管理 IC
BQ24079T 描述
The bq2407xT series of devices are integrated Li-ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter and support charge currents up to 1.5A. The input voltage range with input over-voltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the bq2407xT to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing incorrectly configure USB sources.
The bq2407xT features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery
|
BQ24072T |
BQ24075T |
BQ24079T |
| # Series Cells |
1 |
1 |
1 |
| Charge Current(Max)(A) |
1.5 |
1.5 |
1.5 |
| Charge Status Outputs |
2 |
2 |
2 |
| Control Topology |
Linear |
Linear |
Linear |
| Primary Charge Termination Method |
Minimum Current |
Minimum Current |
Minimum Current |
| Pin/Package |
16QFN |
16QFN |
16QFN |
| Vin(Max)(V) |
28 |
28 |
28 |
| Battery Charge Voltage(V) |
4.2 |
4.2 |
4.1 |
| Optional Functions |
Vout=Vbat + 0.225V |
Vout=5.5V, OVP=6.6V |
Vout=5.5V, OVP=6.6V |
BQ24079T 特性
- Fully Compliant USB Charger
- Selectable 100mA and 500mA Maximum Input Current
- 100mA Maximum Current Limit Ensures Compliance to USB-IF Standard
- Input based Dynamic Power Management (VIN-DPM) for Protection
Against Poor USB Sources
- 28V Input Rating with Over-voltage Protection
- Integrated Dynamic Power Path Management (DPPM) Function Simultaneously
and Independently Powers the System and Charges the Battery
- System Output Tracks Battery Voltage (BQ24072T)
- Supports up to 1.5A Charge Current with Current Monitoring Output (ISET)
- Programmable Input Current Limit up to 1.5A for Wall Adapters
- Battery Disconnect Function with SYSOFF Input
- Reverse Current, Short-Circuit and Thermal Protection
- Flexible Voltage Based NTC Thermistor Input
- Proprietary Start Up Sequence Limits Inrush Current
- Status Indication – Charging/Done, Power Good
- Small 3 mm × 3 mm 16 Lead QFN Package
- APPLICATIONS
- Smart Phones
- PDAs
- MP3 Players
- Low-Power Handheld Devices
BQ24079T 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| BQ24079TRGTR |
ACTIVE |
-40 to 85 |
1.60 | 1ku |
QFN (RGT) | 16 |
3000 | LARGE T&R |
PAP |
| BQ24079TRGTT |
ACTIVE |
-40 to 85 |
1.85 | 1ku |
QFN (RGT) | 16 |
250 | SMALL T&R |
PAP |
BQ24079T 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 |
| BQ24079TRGTR |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-2-260C-1 YEAR |
BQ24079TRGTR |
BQ24079TRGTR |
| BQ24079TRGTT |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-2-260C-1 YEAR |
BQ24079TRGTT |
BQ24079TRGTT |
BQ24079T 应用技术支持与电子电路设计开发资源下载
- BQ24079T 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)
BQ24079T 相关工具