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BQ24765 - 产品图解:
BQ24765-电池充电器IC-电池管理产品-电源管理
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TI产品 - BQ24765介绍
BQ24765 - 具有集成 FET 的 SMBus 控制的电池充电器

BQ24765是TI公司的一款电池充电器IC产品,BQ24765是具有集成 FET 的 SMBus 控制的电池充电器,本页介绍了BQ24765的产品说明、应用、特性等,并给出了与BQ24765相关的TI元器件型号供参考。

BQ24765 - 具有集成 FET 的 SMBus 控制的电池充电器 - 电池充电器IC - 电池管理产品 - TI公司(Texas Instruments,德州仪器)

产品特性
  • Integrated Power MOSFETs, NMOS-NMOS, Synchronous Buck Converter
  • >95% Efficiency
  • Frequency 700kHz Allows Smaller Inductor (5 mm x 5 mm)
  • Thermal Regulation Loop for Safety, Limit TJ = 120°C
  • Adaptive Driver Dead-time and 99.5% Maximum Effective Duty Cycle
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
    • ±2% Input Current Sense Amp Accuracy
  • Integration
    • Integrated Power MOSFETs
    • Input Current Comparator
    • Internal Soft-Start
  • Safety
    • Thermal Regulation Loop and Thermal Shutdown
    • Dynamic Power Management (DPM)
    • Power FETs Over Current Protection
  • 7 V–24 V AC/DC-Adapter Operating Range
  • Simplified SMBus Control
    • Charge Voltage DAC (1.024 V–19.2 V)
    • Charge Current DAC (128 mA–8.064 A)
    • Adapter Current Limit DPM DAC (256 mA–11.008 A)
  • Status and Monitoring Outputs
    • AC/DC Adapter Present With Adjustable Voltage Threshold
    • Input Current Comparator, With Adjustable Threshold and Hysteresis
    • Current Sense Amplifier for Current Drawn From Input Source
  • Charge Any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid (2, 3, and 4 Li-Ion Cells)
  • Charge Enable Pin (CE)
  • Energy Star Low Iq
    • < 10-μA Battery Current with Adapter Removed
    • < 1 mA Input DCINA Current When Adapter Present and Charge Disabled
  • 34-pin, 3.50 mm × 7.00 mm QFN Package
产品应用
  • Notebook and Ultra-Mobile Computers
  • Portable Data-Capture Terminals
  • Portable Printers
  • Medical Diagnostics Equipment
  • Battery Bay Chargers
  • Battery Back-up Systems
产品说明

The bq24765 is a high-efficiency, synchronous battery charger with two integrated 30-mΩ NMOS power MOSFETs, and an integrated input current comparator, offering low component count for space-constraint, multi-chemistry battery charging applications. 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 using SMBus. The bq24765 has switching frequency of 700 kHz. The bq24765 charges 2, 3, or 4 series Li+ cells, and is available in a 34-pin, 3.50 mm x 7.00 mm VQFN package.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
bq24765VQFN (34)3.50 mm × 7.00 mm
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