BQ24109 同步开关模式，锂离子和锂聚合物充电管理 IC (bqSwitcher)
BQ24109 描述
The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced QFN package. The system-controlled version provides additional inputs for full charge management under system control.
The bqSWITCHER charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on user- selectable minimum current level. A programmable charge timer provides a safety backup for charge termination
|
BQ24100 |
BQ24109 |
| # Series Cells |
1 |
1 |
| Charge Current(Max)(A) |
2 |
2 |
| Charge Status Outputs |
2 |
2 |
| Control Topology |
Switchmode |
Switchmode |
| Switching Frequency(kHz) |
1100 |
1100 |
| Primary Charge Termination Method |
Minimum Current |
Host Controlled |
| Pin/Package |
20QFN |
20QFN |
| Vin(Max)(V) |
20 |
20 |
| Battery Charge Voltage(V) |
4.2 |
4.2 |
BQ24109 特性
- Ideal For Highly Efficient Charger Designs For Single-,
Two- or Three-Cell Li-Ion and Li-Polymer Battery Packs
- BQ24109 Also for LiFePO4 Battery
(see Using BQ24109 to Charge the LiFePO4 Battery)
- Integrated Synchronous Fixed-Frequency PWM Controller
Operating at 1.1 MHz With 0% to 100% Duty Cycle
- Integrated Power FETs For Up To 2-A Charge Rate
- High-Accuracy Voltage and Current Regulation
- Available In Both Stand-Alone (Built-In Charge Management and Control)
and System-Controlled (Under System Command) Versions
- Status Outputs For LED or Host Processor Interface Indicates
Charge-In-Progress, Charge Completion, Fault, and AC-Adapter
Present Conditions
- 20-V Maximum Voltage Rating on IN and OUT Pins
- High-Side Battery Current Sensing
- Battery Temperature Monitoring
- Automatic Sleep Mode for Low Power Consumption
- System-Controlled Version Can Be Used In NiMH and NiCd Applications
- Reverse Leakage Protection Prevents Battery Drainage
- Thermal Shutdown and Protection
- Built-In Battery Detection
- Available in 20-Pin, 3,5 mm × 4,5 mm QFN Package
- APPLICATIONS
- Handheld Products
- Portable Media Players
- Industrial and Medical Equipment
BQ24109 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 |
| BQ24109RHLR |
ACTIVE |
-40 to 85 |
2.00 | 1ku |
QFN (RHL) | 20 |
3000 | LARGE T&R |
|
| BQ24109RHLT |
ACTIVE |
-40 to 85 |
2.30 | 1ku |
QFN (RHL) | 20 |
250 | SMALL T&R |
|
BQ24109 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 |
| BQ24109RHLR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24109RHLR |
BQ24109RHLR |
| BQ24109RHLT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24109RHLT |
BQ24109RHLT |
BQ24109 应用技术支持与电子电路设计开发资源下载
- BQ24109 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)
- PowerPAD™ 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)
BQ24109 相关工具
