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BQ24025DRCRG4 参数 Datasheet PDF下载

BQ24025DRCRG4图片预览
型号: BQ24025DRCRG4
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片,锂离子电池和具有自主的USB -PORT锂聚合物充电器和交流适配器电源管理 [SINGLE-CHIP,LI-ION AND LI-POL CHARGER IC WITH AUTONOMOUS USB-PORT AND AC-ADAPTER SUPPLY MANAGEMENT]
分类和应用: 电源电路电池电源管理电路光电二极管
文件页数/大小: 20 页 / 290 K
品牌: TI [ TEXAS INSTRUMENTS ]
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www.ti.com
SLUS549D – DECEMBER 2002 – REVISED MARCH 2006
TYPICAL CHARACTERISTICS
AC DROPOUT VOLTAGE
vs
450
400
350
Dropout Voltage − mV
300
250
200
150
I
O(OUT)
= 250 mA
100
50
0
0
50
100
T
J
− Junction Temperature − _C
150
I
O(OUT)
= 500 mA
I
O(OUT)
= 750 mA
JUNCTION TEMPERATURE
I
O(OUT)
= 1000 mA
Figure 1.
The bqTINY-II supports a precision Li-Ion, Li-pol charging system suitable for single-cell packs.
shows
a typical charge profile, application circuit and
shows an operational flow chart.
Regulation
Voltage
Regulation
Current
Pre-Conditioning
Phase
Current Regulation
Phase
Voltage Regulation
and Charge Termination Phase
Minimum
Charge
Voltage
Charge
Voltage
Charge
Complete
Pre-Conditioning
and Taper Detect
Charge
Current
t
(PRECHG)
t
(CHG)
Figure 2. Typical Charging Profile
9