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BQ24103 Datasheet

  • BQ24103

  • 采用 QFN 封裝具有 2A FET 的 bqSWITCHER(TM) 同步開關(guān)模式鋰離...

  • 26頁

  • TI

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Actual Size
5,5 mm x 3,5 mm
bq24100, bq24103
bq24105, bq24108
bq24113, bq24115
SLUS606C 鈥?JUNE 2004 鈥?REVISED SEPTEMBER 2005
www.ti.com
SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POLYMER CHARGE-MANAGEMENT
IC WITH INTEGRATED POWER FETs (bqSWITCHER鈩?
FEATURES
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Ideal For Highly Efficient Charger Designs For
Single-, Two- or Three-Cell Li-Ion and
Li-Polymer
Battery Packs
Integrated Synchronous Fixed-Frequency
PWM Controller Operating at 1.1 MHz With
0% to 100% Duty Cycle
Integrated Power FETs For Up To 2-A Charge
Rate
High-Accuracy Voltage and Current
Regulation
Available In Both Stand-Alone (Built-In Charge
Management and Control) and
System-Controlled (Under System Command)
Versions
Status Outputs For LED or Host Processor
Interface Indicates Charge-In-Progress,
Charge Completion, Fault, and AC-Adapter
Present Conditions
20-V Maximum Voltage Rating on IN and OUT
Pins
High-Side Current Sensing
Optional Battery Temperature Monitoring
Automatic Sleep Mode for Low Power
Consumption
System-Controlled Version Can Be Used In
NiMH and NiCd Applications
Uses Ceramic Capacitors
Reverse Leakage Protection Prevents Battery
Drainage
Thermal Shutdown and Protection
Built-In Battery Detection
APPLICATIONS
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Handheld Products
Portable Media Players
Industrial and Medical Equipment
Portable Equipment
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DESCRIPTION
The bqSWITCHER鈩?series are highly integrated
Li-ion
and
Li-polymer
switch-mode
charge
management devices targeted at a wide range of
portable applications. The bqSWITCHER鈩?series
offers integrated synchronous PWM controller and
power FETs, high-accuracy current and voltage
regulation, charge preconditioning, charge status, and
charge termination, in a small, thermally enhanced
QFN package. The system-controlled version
provides additional inputs for full charge management
under system control.
The bqSWITCHER charges the battery in three
phases: conditioning, constant current, and constant
voltage. Charge is terminated based on user-
selectable minimum current level. A programmable
charge timer provides a safety backup for charge
termination. The bqSWITCHER automatically restarts
the charge cycle if the battery voltage falls below an
internal threshold. The bqSWITCHER automatically
enters sleep mode when V
CC
supply is removed.
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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.
bqSWITCHER, PowerPAD are trademarks 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 漏 2004鈥?005, Texas Instruments Incorporated

BQ24103 PDF文件相關(guān)型號

BQ24105,BQ24108,BQ24113,BQ24702,BQ24721,BQ24901

BQ24103相關(guān)型號PDF文件下載

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