The bq24070 and bq24071 are highly integrated Li-ion linear charger and system power-path management devices targeted at space-limited portable applications. The bq2407x devices offer DC supply (AC adapter) power-path management with autonomous power-source selection, power FETs and current sensors, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bq2407x devices power the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination, and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC adapter or battery sources.

• Small 3.5-mm × 4.5-mm VQFN Package
• Designed for Single-Cell Li-Ion- or Li-Polymer- Based Portable Applications
• Integrated Dynamic Power-Path Management (DPPM) Feature Allowing the AC Adapter to Simultaneously Power the System and Charge the Battery
• Power Supplement Mode Allows Battery to Supplement the AC Input Current
• Autonomous Power Source Selection (AC Adapter or BAT)
• Supports Up to 2 A Total Current
• Thermal Regulation for Charge Control
• Charge Status Outputs for LED or System Interface Indicates Charge and Fault Conditions
• Reverse Current, Short-Circuit, and Thermal Protection
• Power Good Status Outputs
• 4.4-V and 6-V Options for System Output Regulation Voltage

• Number of series cells
• 1
• Charge current (Max) (A)
• 1.5
• 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))
• 18
• Control interface
• Standalone (RC-Settable)
• Features
• BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Power Path
• Operating Vin (Min) (V)
• 4.35
• Rating
• Catalog

BQ24071的完整型号有：BQ24071RHLR、BQ24071RHLT，以下是这些产品的关键参数及官网采购报价：

BQ24071RHLR，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BQ24071RHLR的批量USD价格：1.159（1000+）

BQ24071RHLT，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BQ24071RHLT的批量USD价格：1.391（1000+）

BQ24071EVM — 1.5-A Single-Chip Li-Ion and Li-Pol Charger

The bq24071EVM provides a convenient method for evaluating the performance of a charge managementand system power solution for portable applications using the bq24070/1 productfamily. A completly designed and tested module is presented. The charger is designed to deliver up to 1.5A of (...)