BQ24108
- Ideal For Highly Efficient Charger Designs For
Single-, Two-, or Three-Cell Li-Ion and Li-Polymer
Battery Packs - bq24105 Also for LiFePO4 Battery (see Using
bq24105 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, 3.50 mm × 4.50 mm VQFN
Package - APPLICATIONS
- Handheld Products
- Portable Media Players
- Industrial and Medical Equipment
- Portable Equipment
All other trademarks are the property of their respective owners
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 VQFN 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. The bqSWITCHER™ automatically restarts the charge cycle if the battery voltage falls below an internal threshold. The bqSWITCHER™ automatically enters sleep mode when VCC supply is removed.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | bq241xx Synchronous Switched-Mode, Li-Ion and Li-Polymer Charge-Management IC With Integrated Power FETs (bqSWITCHER™) 数据表 (Rev. P) | PDF | HTML | 2015-11-30 | ||
| 应用手册 | BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers | 2019-12-31 | ||||
| 应用手册 | Implementations of Battery Charger and Power-Path Mgmt System Using bq241xx | 2006-6-6 | ||||
| 应用手册 | Power Dissipation Analysis & Circuit Design for Sync Switching Battery Charger | 2005-5-31 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RHL) | 20 | Ultra Librarian |