The bq2461x device is a highly integrated, Japan Electronic Information Technology Association (JEITA) guideline-compatible, Li-ion or Li-polymer switched-mode battery charge controller. The device offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring

The bq2461x charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq2461x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

• Battery Thermistor Sense for JEITA Guideline Compatible Charger
• 600-kHz NMOS-NMOS Synchronous Buck Converter
• Stand-Alone Charger Support for Li-Ion or Li- Polymer
• 5-V28-V VCC Input Operating Range and Supports 1 to 6 Battery Cells
• Up to 10-A Charge Current and Adapter Current
• High-Accuracy Voltage and Current Regulation
  • ±0.5% Charge Voltage Accuracy
  • ±3% Charge Current Accuracy
  • ±3% Adapter Current Accuracy
• Integration
  • Automatic System Power Selection From Adapter or Battery
  • Internal Loop Compensation
  • Internal Soft-Start
  • Dynamic Power Management
• Safety Protection
  • Input Overvoltage Protection
  • Battery Detection
  • Reverse Protection Input FET
  • Programmable Safety Timer
  • Charge Overcurrent Protection
  • Battery Short Protection
  • Battery Overvoltage Protection
  • Thermal Shutdown
• Status Outputs
  • Adapter Present
  • Charger Operation Status
• Charge Enable Pin
• 6-V Gate Drive for Synchronous Buck Converter
• 30-ns Driver Dead-Time and 99.5% Maximum Effective Duty Cycle
• 24-Pin, 4-mm × 4-mm QFN Package
• Energy Star Low Quiescent Current Iq
  • < 15-A Off-State Battery Discharge Current
  • < 1.5-mA Off-State Input Quiescent Current

• Number of series cells
• 1, 2, 3, 4, 5, 6
• Charge current (Max) (A)
• 10
• Operating Vin (Max) (V)
• 28
• Cell chemistry
• Li-Ion/Li-Polymer
• Battery charge voltage (Min) (V)
• 2.1
• Battery charge voltage (Max) (V)
• 26
• Absolute Vin (safety rating) (Max) ((V))
• 33
• Control interface
• Standalone (RC-Settable)
• Features
• BAT temp thermistor monitoring (JEITA profile), IINDPM (Input current limit), Power Path
• Operating Vin (Min) (V)
• 5
• Rating
• Catalog

BQ24616的完整型号有：BQ24616RGER、BQ24616RGET，以下是这些产品的关键参数及官网采购报价：

BQ24616RGER，工作温度：-40 to 85，封装：VQFN (RGE)-24，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BQ24616RGER的批量USD价格：1.89（1000+）

BQ24616RGET，工作温度：-40 to 85，封装：VQFN (RGE)-24，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BQ24616RGET的批量USD价格：2.268（1000+）

BQ24616EVM BQ24616 独立同步开关模式锂离子或锂聚合物电池充电器的评估模块

bq2461x 是高度集成的锂离子或锂聚合物开关模式电池充电控制器。bq2463x 是高度集成的开关模式电池充电控制器，专为磷酸锂电池化学物充电而设计。它们可以为恒频同步 PWM 控制器提供高准确度充电电流和电压调节、适配器电流调节、充电预处理和充电状态监控。bq2461x/bq2463x 在以下三个阶段为电池充电：预处理、恒定电流和恒定电压。当电流达到最低的用户可选级别时，充电将终止。可编程充电定时器可以为充电终止提供安全备份。当电池电压低于内部阈值时，q2461x/bq2463x 会自动重新启动充电周期；当输入电压低于电池电压时，则会进入低静态电流休眠模式。