BQ24105-Q1 (正在供货)

集成 FET 的汽车类 4.35V 至 16V、2A、1 至 3 节同步锂离子和锂聚合物充电器

集成 FET 的汽车类 4.35V 至 16V、2A、1 至 3 节同步锂离子和锂聚合物充电器 - BQ24105-Q1


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 QFN package.

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.


  • Qualified for Automotive Applications
  • Ideal For Highly Efficient Charger Designs For
    Single-, Two-, or Three-Cell Li-Ion and Li-Polymer
    Battery Packs
  • Also for LiFePO4 Battery (see Using bq24105 to Charge 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
  • Stand-Alone (Built-In Charge Management and Control) Version
  • 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
  • Reverse Leakage Protection Prevents Battery Drainage
  • Thermal Shutdown and Protection
  • Built-In Battery Detection
  • Available in 20-Pin, 3.5 mm × 4.5 mm, QFN Package

All trademarks are the property of their respective owners.


参数 与其它产品相比 电池充电器 IC

Number of Series Cells
Cell Chemistry
Battery Charge Voltage (Min) (V)
Battery Charge Voltage (Max) (V)
Charge Current (Max) (A)
Control Interface
Control Topology
Operating Temperature Range (C)
Operating Vin (Min) (V)
Operating Vin (Max) (V)
Absolute Vin (safety rating) (Max) ((V))
BQ24105-Q1 BQ24030-Q1 BQ24031-Q1 BQ24075-Q1 BQ25071-Q1
1    1    1    1   
Charger    Charger    Charger    Charger    Charger   
Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    LiFePO4   
2.1    4.2    4.1    4.2    3.5   
15.5    4.2    4.1    4.2    3.5   
Integrated FET
Temp Monitoring (Thermistor Pin)   
Integrated LDO
Power Path
Temp Monitoring (Thermistor Pin)   
Integrated LDO
Power Path
Temp Monitoring (Thermistor Pin)   
Power Path
Temp Monitoring (Thermistor Pin)
Vin DPM (OK for Solar Power Source)   
Thermal Regulation   
2    1.5    1.5    1.5    1   
Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)   
Switch-Mode Buck    Linear    Linear    Linear    Linear   
Automotive    Automotive    Automotive    Automotive    Automotive   
-40 to 85    -40 to 85    -40 to 85    -40 to 125    -40 to 125   
20VQFN    20VQFN    20VQFN    16VQFN    10WSON   
4.35    4.35    4.35    4.35    3.75   
16    16    16    6.4    8   
20    18    18    28    30   

其它合格版本 BQ24105-Q1

版本 器件型号 定义
目录 BQ24105 TI 的标准目录产品