The bq24707 and bq24707A devices are high-efficiency, synchronous battery chargers, offering low component count for space-constrained, multi-chemistry battery charging applications.

SMBus controlled input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller.

The IC uses the internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

The IC provides an IFAULT output to alarm if any MOSFET fault or input over current occurs. This alarm output allows users to turn off input power selectors when the fault occurs. Meanwhile, an independent comparator with internal reference is available to monitor input current, output current, or output voltage.

The IC charges one-, two-, three-, or four-series Li+ cells, and is available in a 20-pin, 3.5 × 3.5 mm QFN package.

• SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter With Programmable 615 kHz, 750 kHz, and 885 kHz Switching Frequency
• Real-Time System Control on ILIM Pin to Limit Charge Current
• Enhanced Safety Features for Overvoltage Protection, Overcurrent Protection, Battery, Inductor, and MOSFET Short-Circuit Protection
• Programmable Input Current, Charge Voltage, Charge Current Limits
  • ±0.5% Charge Voltage Accuracy up to 19.2 V
  • ±3% Charge Current Accuracy up to 8.128 A
  • ±3% Input Current Accuracy up to 8.064 A
  • ±2% 20× Adapter Current or Charge Current Output Accuracy
• Programmable Adapter Detection and Indicator
• Independent Comparator With Internal Reference
• Integrated Soft-Start
• Integrated Loop Compensation
• AC Adapter Operating Range 5 V to 24 V
• 15-μA Off-State Battery Discharge Current
• 20-pin 3.5 mm × 3.5 mm QFN Package
• bq24707: ACOK Delay Default 1.3 s
• bq24707A: ACOK Delay Default 1.2 ms
• APPLICATIONS
  • Portable Notebook Computers, UMPCs, Ultra-Thin Notebooks, and Netbooks
  • Personal Digital Assistants
  • Handheld Terminals
  • Industrial and Medical Equipment
  • Portable Equipment

All other trademarks are the property of their respective owners

• Number of series cells
• 1, 2, 3, 4
• Charge current (Max) (A)
• 8
• Operating Vin (Max) (V)
• 24
• Cell chemistry
• Li-Ion/Li-Polymer
• Battery charge voltage (Min) (V)
• 1.024
• Battery charge voltage (Max) (V)
• 19.2
• Absolute Vin (safety rating) (Max) ((V))
• 30
• Control interface
• SMBus
• Features
• Input OVP, Power Path
• Operating Vin (Min) (V)
• 4.5
• Rating
• Catalog

BQ24707的完整型号有：BQ24707RGRR、BQ24707RGRT，以下是这些产品的关键参数及官网采购报价：

BQ24707RGRR，工作温度：-40 to 85，封装：VQFN (RGR)-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BQ24707RGRR的批量USD价格：2.948（1000+）

BQ24707RGRT，工作温度：-40 to 85，封装：VQFN (RGR)-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BQ24707RGRT的批量USD价格：3.538（1000+）

BQ24707EVM-558 — BQ24707 高频、高性能 SMBus 充电控制器

bq24707EVM-558 评估模块是一个完整的充电器模块，用于评估使用 bq24707 器件的多节（1 到 4 节）同步笔记本充电器。它设计用于为锂离子或锂聚合物应用提供高达 4A 的充电电流。该充电电流可由 SMBus 接口通过 EV2300 接口板编程。bq24707EVM 未附带 EV2300 接口板，因此必须单独订购。bq24707 是高效率同步电池充电器，可为空间受限、多化学成分电池充电应用提供低组件数量。可通过 SMBus 接口编程充电电压、充电电流、输入电流和灵活充电选项。

bq24725_725A_726_707_73x Calculation Tool (Rev. A)

该参考设计是一套完整的充电器模块，可使用 bq24707 器件对多节（1 到 4 节）同步笔记本电脑充电器进行评估。它设计用于为锂离子或锂聚合物应用提供高达 4A 的充电电流。该充电电流可由 SMBus 接口通过 EV2300 接口板编程。该参考设计未随附 EV2300 接口板，因此必须单独订购。该设计中包括高效率的同步电池充电器，组件数量非常少，适用于空间有限的多化学物电池充电应用。可通过 SMBus 接口对充电电压、充电电流、输入电流和灵活充电选项进行编程。