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 V_CC 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
• Charge current (Max) (A)
• 2
• Operating Vin (Max) (V)
• 16
• Cell chemistry
• Li-Ion/Li-Polymer
• Battery charge voltage (Min) (V)
• 4.2
• Battery charge voltage (Max) (V)
• 4.2
• 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

BQ24100的完整型号有：BQ24100RHLR，以下是这些产品的关键参数及官网采购报价：

BQ24100RHLR，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BQ24100RHLR的批量USD价格：2.03（1000+）

BQ24100EVM — BQ24100 评估模块

The Texas Instruments bq24100EVM is the evaluation module (EVM) for the bq24100 Li-Ion charge management IC. The bq24100 is a highly integrated battery charge IC utilizing synchronous switch mode power conversion for efficient and comprehensive charge control of a single cell Li-Ion battery. (...)

TEMPSENSE-SW — 温度传感设计软件

The TempSense Designer software allows the user to easily design temperature sensing circuits for many of the Texas Instruments battery charger devices. A full listing of the supported devices is included under the "Support" menu in the program. The user can use the thermisters included in the (...)

bq241xx (HPA040B) EVM gerber file

该参考设计是针对锂离子充电管理 IC 的解决方案。其具有高度集成的电池充电 IC（采用同步开关模式电源转换），可对单节锂离子电池进行高效且全面的充电控制。该解决方案为评估 IC 的运行和性能提供了便利的方法。