BQ24105 Status: ACTIVE

Standalone Synchronous Switch-Mode Li-Ion Charger w/2A FET in QFN-20, 1 to 3 Cells

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Datasheet

Synchronous Switchmode, Li-Ion & Li-Pol Charge Mngmt IC (bqSwitcher) (Rev. N) (PDF 1232 KB)
21 Nov 2008

	BQ24100	BQ24103	BQ24103A	BQ24104	BQ24105	BQ24108	BQ24113	BQ24113A	BQ24115
# Series Cells	1	1, 2	1, 2	1, 2	1, 2, Multiple	1	1, 2	1, 2	1, 2, Multiple
Charge Current(Max)(A)	2	2	2	2	2	2	2	2	2
Charge Status Outputs	2	2	2	2	2	2	2	2	2
Control Topology	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode
Switching Frequency(kHz)	1100	1100	1100	1100	1100	1100	1100	1100	1100
Primary Charge Termination Method	Minimum Current	Minimum Current	Minimum Current	Minimum Current	Minimum Current	Minimum Current	Host Controlled	Host Controlled	Host Controlled
Pin/Package	20QFN	20QFN	20QFN	20QFN	20QFN	20QFN	20QFN	20QFN	20QFN
Vin(Max)(V)	20	20	20	20	20	20	20	20	20
Battery Charge Voltage(V)	4.2	4.2, 8.4	4.2, 8.4	4.2, 8.4	adjustable	4.2	4.2,8.4	4.2,8.4	adjustable
	Samples	Samples	Samples	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

Other qualified versions of BQ24105

Version	Part Number	Definition
Automotive	BQ24105-Q1	Q100 devices qualified for high-reliability automotive applications targeting zero defects

Customers Who Evaluated This Product Also Evaluated

UC3909: Switch-mode Lead-Acid Battery Charger with Differential Current Sense
BQ24100: Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1-Cell
BQ2031: Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms
TL431A: Adjustable Precision Shunt Regulator
TLV431A: Low Voltage Adjustable Precision Shunt Regulator
UCC28600: 8-Pin Quasi Resonant Flyback Green Mode Controller

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Product Information

Features

Ideal For Highly Efficient Charger Designs For Single-, Two- or Three-Cell Li-Ion and Li-Polymer Battery Packs
bq24105 Also for LiFePO₄Battery (see Using bq24105 to Charge the LiFePO₄ Battery)
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 Battery Current Sensing
Battery Temperature Monitoring
Automatic Sleep Mode for Low Power Consumption
System-Controlled Version Can Be Used In NiMH and NiCd Applications
Reverse Leakage Protection Prevents Battery Drainage
Thermal Shutdown and Protection
Built-In Battery Detection
Available in 20-Pin, 3,5 mm × 4,5 mm QFN Package
APPLICATIONS
- Handheld Products
- Portable Media Players
- Industrial and Medical Equipment
- Portable Equipment

bqSWITCHER, PowerPAD are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners

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 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.

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
BQ24105RHLR	ACTIVE	-40 to 85	3.75 \| 1ku	QFN (RHL) \| 20	View	3000 \| LARGE T&R
BQ24105RHLRG4	ACTIVE	-40 to 85	3.75 \| 1ku	QFN (RHL) \| 20	View	3000 \| LARGE 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 12:05 PM GMT, 06 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksBQ24105RHLR
Asia	WPI	32
TI Lead Time*: 20 WeeksBQ24105RHLRG4
None Reported View Distributors
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
BQ24105RHLR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ24105RHLRG4	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 BQ24105

Tools & Software

Name	Part #	Company	Tool / Software Type
Temp Sense Designer Software	TEMPSENSE-SW	Texas Instruments	Analysis Software
BQ24105 Evaluation Module	BQ24105EVM	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
UC3909	Switch-mode Lead-Acid Battery Charger with Differential Current Sense	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ24100	Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1-Cell	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ2031	Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ2954	Switch-mode Li-Ion Charge Controller	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ24103	Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1- or 2-cell	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ24450	Integrated Charge Controller for Lead-Acid Batteries	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ24104	Synchronous Switchmode, Li-Ion & Li-Pol Charge Mngmt IC (bqSwitcher)	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
UC3906	Linear Lead-Acid Battery Charger	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ24115	Host-controlled Synchronous, Switch-Mode Li-Ion Charger w/2A FET in QFN-20, 1 to 3 cells	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ24702	Multi-Chemistry Battery Charge Controller and System Power Selector	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
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TLV431A	Low Voltage Adjustable Precision Shunt Regulator	VOLTAGE REFERENCE-SHUNT VOLTAGE REFERENCE	TI customers also evaluated this product.
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BQ24105 Status: ACTIVE

Standalone Synchronous Switch-Mode Li-Ion Charger w/2A FET in QFN-20, 1 to 3 Cells

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