herunterladen
1
FEATURES
DESCRIPTION
APPLICATIONS
SET
1
2
3
4
10
9
8
5
IN
VCC
OUT
VSS
STAT1
STAT2 7
6
BAT
PG
ISET
bq24012DRC
+
BATTERY
PACK
PACK+
PACK
SYSTEM
SYSTEM
INTERFACE
CE
AC ADAPTER
bq24010, bq24012
bq24013, bq24014, bq24018
www.ti.com
...................................................................................................................................... SLUS530J – SEPTEMBER 2002 – REVISED DECEMBER 2008
SINGLE-CHIP, LI-ION CHARGE MANAGEMENT IC FOR
HANDHELD APPLICATIONS ( bqTINY™)
2
• Small 3 mm × 3 mm MLP (QFN) Package
• Ideal for Low-Dropout Designs for Single-Cell
The bqTINY™ series are highly integrated Li-Ion and
Li-Pol linear charge management devices targeted at
Li-Ion or Li-Pol Packs in Space Limited
space limited portable applications. The bqTINY™
Applications
series offer integrated powerFET and current sensor,
• Integrated Power FET and Current Sensor for
reverse blocking protection, high accuracy current
Up to 1-A Charge Applications
and voltage regulation, charge status, and charge
• Reverse Leakage Protection Prevents Battery
termination, in a small package.
Drainage
The bqTINY™ charges the battery in three phases:
• Integrated Current and Voltage Regulation
conditioning, constant current, and constant voltage.
Charge is terminated based on minimum current. An
• ± 0.5% Voltage Regulation Accuracy
internal charge timer provides a backup safety feature
• Charge Termination by Minimum Current and
for charge termination. The bqTINY™ automatically
Time
re-starts the charge if the battery voltage falls below
• Precharge Conditioning With Safety Timer
an internal threshold. The bqTINY™ automatically
enters sleep mode when V
CC
supply is removed.
• Status Outputs for LED or System Interface
Indicates Charge and Fault Conditions
In addition to the standard features, different versions
• Battery Insertion and Removal Detection
of the bqTINY™ offer a multitude of additional
features. These include temperature sensing input for
• Works With Regulated and Unregulated
detecting hot or cold battery packs; power good ( PG)
Supplies
output indicating the presence of valid input power; a
• Short-Circuit Protection
TTL-level charge-enable input (CE) used to disable or
• Charge Voltage Options: 4.2 V and 4.36 V
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.
• Cellular Phones
• PDAs, MP3 Players
• Digital Cameras
• Internet Appliances
1
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.
2 bqTINY is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2002 – 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Verzeichnis
