BQ24123 Status: ACTIVE

Synchronous Switch-Mode 2-cell Li-Ion Charger w/2A FET, enhanced EMI performance

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Datasheet

Single-Chip Switchmode, Li-Ion & Li-Polymer Charge Mgmt IC w/enhanced EMI Perf (Rev. G) (PDF 1163 KB)
12 Aug 2008

	BQ24120	BQ24123	BQ24125
# Series Cells	1	1, 2	1, 2, 3
Charge Current(Max)(A)	2	2	2
Charge Status Outputs	2	2	2
Control Topology	Switchmode	Switchmode	Switchmode
Switching Frequency(kHz)	1100	1100	1100
Primary Charge Termination Method	Minimum Current	Minimum Current	Minimum Current
Pin/Package	20QFN	20QFN	20QFN
Vin(Max)(V)	20	20	20
	Samples	Samples	Samples
	Inventory	Inventory	Inventory

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TPS54331: 3A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-mode ™

TPS3808G01: Low Quiescent Current, Programmable-Delay Supervisory Circuit

Product Information

Features

Enhanced EMI Performance
Integrated Power FETs For Up To 2-A Charge Rate
Suitable For 1-, 2-, or 3-Cell Li-Ion and Li-Polymer Battery Packs
Synchronous Fixed-Frequency PWM Controller Operating at 1.1 MHz With 0% to 100% Duty Cycle
High-Accuracy Voltage and Current Regulation
Status Outputs For LED or Host Processor Interface Indicates Charge-In-Progress, Charge Completion, Fault, and AC-Adapter Present Conditions
20-V Absolute Maximum Voltage Rating on IN and OUT Pins
Accurate High-Side Battery Current Sensing
Battery Temperature Monitoring
Automatic Sleep Mode for Low Power Consumption
Reverse Leakage Protection Prevents Battery Drainage
Thermal Shutdown and Protection
Built-In Battery Detection
Available in 20 pin 3,5 mm x 4,5 mm QFN Package
APPLICATIONS
- Handheld Products
- Portable Media Players
- Industrial and Medical Equipment
- Portable Equipment
- Portable DVD Players

View All Features in Datasheet

Description

The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ 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 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.

View All Description in Datasheet

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Samples
BQ24123RHLR	ACTIVE	-40 to 85	2.15 \| 1ku	QFN (RHL) \| 20	View	3000 \| LARGE T&R	Purchase Samples
BQ24123RHLRG4	ACTIVE	-40 to 85	2.15 \| 1ku	QFN (RHL) \| 20	View	3000 \| LARGE T&R	Purchase Samples
BQ24123RHLT	ACTIVE	-40 to 85	2.35 \| 1ku	QFN (RHL) \| 20	View	250 \| SMALL T&R
BQ24123RHLTG4	ACTIVE	-40 to 85	2.35 \| 1ku	QFN (RHL) \| 20	View	250 \| SMALL T&R

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:15 PM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksBQ24123RHLR
None Reported View Distributors
TI Lead Time*: 20 WeeksBQ24123RHLRG4
None Reported View Distributors
TI Lead Time*: 16 WeeksBQ24123RHLT
None Reported View Distributors
TI Lead Time*: 16 WeeksBQ24123RHLTG4
Asia	Farnell Asia	4
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
BQ24123RHLR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ24123RHLRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ24123RHLT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ24123RHLTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for BQ24123

Tools & Software

Name	Part #	Company	Tool / Software Type
Temp Sense Designer Software	TEMPSENSE-SW	Texas Instruments	Analysis Software
bq24123 Evaluation Module	BQ24123EVM-002	Texas Instruments	Development Boards/EVMs
Quick Search Selection Tool for Battery Chargers	BATTERY_CHARGERS_SELECTION_TOOL	Texas Instruments	Free Evaluation Tools

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS54331	3A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-mode ™	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS3808G01	Low Quiescent Current, Programmable-Delay Supervisory Circuit	POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS)	TI customers also evaluated this product.

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BQ24123 Status: ACTIVE

Synchronous Switch-Mode 2-cell Li-Ion Charger w/2A FET, enhanced EMI performance

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