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BQ24012DRCR 参数 Datasheet PDF下载

BQ24012DRCR图片预览
型号: BQ24012DRCR
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片,锂离子充电管理IC为手持式应用( bqTINY⑩ ) [SINGLE-CHIP, LI-ION CHARGE MANAGEMENT IC FOR HANDHELD APPLICATIONS (bqTINY⑩)]
分类和应用: 电源电路电源管理电路光电二极管
文件页数/大小: 25 页 / 636 K
品牌: TI [ TEXAS INSTRUMENTS ]
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www.ti.com
SLUS530H – SEPTEMBER 2002 – REVISED JUNE 2007
SINGLE-CHIP, LI-ION CHARGE MANAGEMENT IC FOR
HANDHELD APPLICATIONS (bqTINY™)
FEATURES
Small 3 mm
×
3 mm MLP (QFN) Package
Ideal for Low-Dropout Designs for Single-Cell
Li-Ion or Li-Pol Packs in Space Limited
Applications
Integrated Power FET and Current Sensor for
Up to 1-A Charge Applications
Reverse Leakage Protection Prevents Battery
Drainage
Integrated Current and Voltage Regulation
±0.5%
Voltage Regulation Accuracy
Charge Termination by Minimum Current and
Time
Precharge Conditioning With Safety Timer
Status Outputs for LED or System Interface
Indicates Charge and Fault Conditions
Battery Insertion and Removal Detection
Works With Regulated and Unregulated
Supplies
Short-Circuit Protection
Charge Voltage Options: 4.2 V and 4.36 V
DESCRIPTION
The bqTINY™ series are highly integrated Li-Ion and
Li-Pol linear charge management devices targeted at
space limited portable applications. The bqTINY™
series offer integrated powerFET and current sensor,
reverse blocking protection, high accuracy current
and voltage regulation, charge status, and charge
termination, in a small package.
The bqTINY™ 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
feature for charge termination. The bqTINY™
automatically re-starts the charge if the battery
voltage falls below an internal threshold. The
bqTINY™ automatically enters sleep mode when
V
CC
supply is removed.
In addition to the standard features, different
versions of the bqTINY™ offer a multitude of
additional features. These include temperature
sensing input for detecting hot or cold battery packs;
power good (PG) output indicating the presence of
valid input power; a TTL-level charge-enable input
(CE) used to disable or enable the charge process;
and a TTL-level timer and termination enable (TTE)
input used to disable or enable the fast-charge timer
and charge termination.
APPLICATIONS
Cellular Phones
PDAs, MP3 Players
Digital Cameras
Internet Appliances
bq24012DRC
AC ADAPTER
1
2
IN
VCC
OUT 10
BAT
9
PACK+
BATTERY
PACK
+
SYSTEM
PACK
SYSTEM
INTERFACE
3
4
5
STAT1
STAT2
VSS
CE 8
PG 7
SET
ISET 6
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2002–2007, Texas Instruments Incorporated