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)
- 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
- Notebook and Ultra-Mobile Computers
- Portable Data-Capture Terminals
- Portable Printers
- Medical Diagnostics Equipment
- Battery Bay Chargers
- Battery Back-up Systems
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.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
bq24765 | VQFN (34) | 3.50 mm × 7.00 mm |