BQ24765 - 具有集成 FET 的 SMBus 控制的电池充电器

BQ24765是TI德州仪器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，本站介绍了BQ24765的封装应用图解、特点和优点、功能等，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 - 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 NUMBER	PACKAGE	BODY SIZE (NOM)
bq24765	VQFN (34)	3.50 mm × 7.00 mm

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