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BQ24022DRCR 参数 Datasheet PDF下载

BQ24022DRCR图片预览
型号: BQ24022DRCR
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: 电池光电二极管
文件页数/大小: 19 页 / 248 K
品牌: TI [ TEXAS INSTRUMENTS ]
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bq24020, bq24022,
bq24023, bq24024
bq24025, bq24026
SLUS549C − DECEMBER 2002 − REVISED AUGUST 2004
SINGLE CHIP, LI ION AND LI POL CHARGER IC WITH AUTONOMOUS
USB PORT AND AC ADAPTER SUPPLY MANAGEMENT (bqTINYt II)
FEATURES
D
Small 3 mm
×
3 mm MLP Package
D
Charges and Powers Systems from Either AC
D
Adapter or USB With Autonomous
Power-Source Selection
Integrated USB Control With Selectable
100 mA and 500 mA Charge Rates
Single-Cell Li-Ion or Li-Pol Packs in Space
Limited Portable Applications
DESCRIPTION
The bqTINY-II series are highly integrated and flexible
Li-Ion linear charge and system power management
devices targeted at space limited charger applications.
The bqTINY-II series offer integrated USB-port and
ac-adapter supply management with autonomous
power-source selection, power FET and current
sensor, high-accuracy current and voltage regulation,
charge status, and charge termination, in a single
monolithic device.
The bqTINY-II automatically selects the USB-Port or
the ac-adapter as the power source for the system. In
the USB configuration, the host can select from the two
preset charge rates of 100 mA and 500 mA. In the
ac−adapter configuration an external resistor sets the
magnitude of the system or charge current.
The bqTINY-II charges the battery in three phases:
conditioning, constant current, and constant voltage.
Charge is terminated based on minimum current. An
internal charge timer provides a backup safety for
charge termination. The bqTINY-II automatically re-
starts the charge if the battery voltage falls below an
internal threshold. The bqTINY-II automatically enters
sleep mode when both supplies are removed.
D
Ideal for Low-Dropout Charger Designs for
D
Integrated Power FET and Current Sensor for
Up to 1-A Charge Applications From AC
Adapter
D
Precharge Conditioning With Safety Timer
D
Power Good (AC Adapter Present) Status
D
D
Output
Optional Battery Temperature Monitoring
Before and During Charge
Automatic Sleep Mode for Low-Power
Consumption
APPLICATIONS
D
PDAs, MP3 Players
D
Digital Cameras
D
Internet Appliances
D
Smartphones
VDC
AC
ADAPTER
GND
1
bq24020DRC
AC
OUT
10
PACK+
BATTERY PACK
+
SYSTEM
PACK−
VBUS
2
3
USB
STAT1
TS
CE
9
8
7
RSET
6
SYSTEM
INTERFACE
USB
PORT
GND
4
5
STAT2 ISET2
VSS
ISET1
D+
D−
UDG−02184
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
bqTINY is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
2002, Texas Instruments Incorporated