BQ24155 与 USB 完全兼容的完全集成开关模式单节锂离子充电器
BQ24155 描述
The bq24155 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The bq24155 integrates a synchronous PWM controller, power FETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
The bq24155 charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface
|
BQ24155 |
| # Series Cells |
1 |
| Charge Current(Max)(A) |
1.25 |
| Charge Status Outputs |
1 |
| Control Topology |
Switchmode |
| Switching Frequency(kHz) |
3000 |
| Primary Charge Termination Method |
Minimum Current |
| Pin/Package |
14VQFN |
| Vin(Max)(V) |
20 |
| Battery Charge Voltage(V) |
3.5 to 4.44 |
BQ24155 特性
- Charge Faster than Linear Chargers
- High-Accuracy Voltage and Current Regulation
- Input Current Regulation Accuracy: ±5% (100 mA and 500 mA)
- Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C-125°C)
- Charge Current Regulation Accuracy: ±5%
- High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
- 20-V Absolute Maximum Input Voltage Rating
- 6-V Maximum Operating Input Voltage
- Built-In Input Current Sensing and Limiting
- Integrated Power FETs for Up To 1.25-A Charge Rate
- Programmable Charge Parameters through I2C Compatible Interface (up to 3.4 Mbps):
- Input Current
- Fast-Charge/Termination Current
- Charge Voltage (3.5 V to 4.44 V)
- Safety Timer with Reset Control
- Termination Enable
- Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz with 0% to 99.5% Duty Cycle
- Automatic High Impedance Mode for Low Power Consumption
- Robust Protection
- Reverse Leakage Protection Prevents Battery Drainage
BQ24155 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 |
| BQ24155RGYR |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
VQFN (RGY) | 14 |
3000 | LARGE T&R |
24155 |
| BQ24155RGYT |
ACTIVE |
-40 to 85 |
2.20 | 1ku |
VQFN (RGY) | 14 |
250 | SMALL T&R |
24155 |
BQ24155 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 |
| BQ24155RGYR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24155RGYR |
BQ24155RGYR |
| BQ24155RGYT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24155RGYT |
BQ24155RGYT |
BQ24155 应用技术支持与电子电路设计开发资源下载
- BQ24155 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)
BQ24155 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| BQMTESTER 多通道测试和程序板 |
BQMTESTER |
Texas Instruments |
开发电路板/EVM |
| Single Channel Tester |
BQTESTER |
Texas Instruments |
开发电路板/EVM |
| 用于 BQ24155 完全集成开关模式单节锂离子充电器的评估模块 |
BQ24155EVM |
Texas Instruments |
开发电路板/EVM |
| BQ24155 评估模块 |
BQ24155EVM-004 |
Texas Instruments |
开发电路板/EVM |
| 电量监测计化学物更新器 |
GASGAUGECHEM-SW |
Texas Instruments |
分析软件 |