- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：电池管理 IC - 电池充电器 IC
- 功能描述：独立 1 至 2 节 2A 同步降压电池充电器
- 点击这里打开及下载BQ24104的技术文档资料
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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.
- 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
- Number of series cells
- 1, 2
- Charge current (Max) (A)
- 2
- Operating Vin (Max) (V)
- 16
- Cell chemistry
- Li-Ion/Li-Polymer
- Battery charge voltage (Min) (V)
- 4.2, 8.4
- Battery charge voltage (Max) (V)
- 4.2, 8.4
- Absolute Vin (safety rating) (Max) ((V))
- 20
- Control interface
- Standalone (RC-Settable)
- Features
- BAT temp thermistor monitoring (hot/cold profile), Input OVP
- Operating Vin (Min) (V)
- 4.35
- Rating
- Catalog
BQ24104的完整型号有：BQ24104RHLR、BQ24104RHLT，以下是这些产品的关键参数及官网采购报价：
BQ24104RHLR，工作温度：-40 to 85，封装：VQFN (RHL)-20，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ24104RHLR的批量USD价格：2.03（1000+）
BQ24104RHLT，工作温度：-40 to 85，封装：VQFN (RHL)-20，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ24104RHLT的批量USD价格：2.436（1000+）
BQ24104RHLR，工作温度：-40 to 85，封装：VQFN (RHL)-20，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ24104RHLR的批量USD价格：2.03（1000+）
BQ24104RHLT，工作温度：-40 to 85，封装：VQFN (RHL)-20，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ24104RHLT的批量USD价格：2.436（1000+）
