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. M) (bq24105.pdf, 1098 KB)
12 Aug 2008 Download

	BQ24100	BQ24103	BQ24103A	BQ24105	BQ24108	BQ24113	BQ24113A	BQ24115
# Series Cells	1	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
Charge Status Outputs	2	2	2	2	2	2	2	2
Control Topology	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode	Switchmode
Switching Frequency(kHz)	1100	1100	1100	1100	1100	1100	1100	1100
Primary Charge Termination Method	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
Vin(Max)(V)	20	20	20	20	20	20	20	20
Battery Charge Voltage(V)	4.2	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
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

UC3909: Switch-mode Lead-Acid Battery Charger with Differential Current Sense
BQ2031: Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms
BQ2954: Switch-mode Li-Ion Charge Controller
TPS3106K33: Ultra Low-Supply Current/Supply-Voltage Supervisory Circuits
TPS2052B: Current-Limited, Power-Distribution Switches
TPS79330: Single Output LDO, 200mA, Fixed(3.0V), High PSRR, Low Noise

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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
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

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	4.70 \| 100u	QFN (RHL) \| 20	View	3000 \| LARGE T&R
BQ24105RHLRG4	ACTIVE	-40 to 85	4.70 \| 100u	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

	TI Inventory Status			Reported Distributor Inventory
BQ24105RHLR	As of 9:15 AM GMT, 10 Oct 2008			As of 9:15 AM GMT, 10 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 24 Nov	6 Weeks	Americas	Arrow	>1k
					Avnet	>1k
					DigiKey	>1k
					Mouser Electronics	>1k
				Asia	WPI	73
				Europe	Farnell	>1k
BQ24105RHLRG4	As of 9:15 AM GMT, 10 Oct 2008			As of 9:15 AM GMT, 10 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 24 Nov	6 Weeks	Americas	Mouser Electronics	>1k
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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

Datasheets

Synchronous Switchmode, Li-Ion & Li-Pol Charge Mngmt IC (bqSwitcher) (Rev. M) (bq24105.pdf, 1098 KB)
12 Aug 2008 Download

Application Notes

Using the bq24105/25 to Charge LiFePO4 battery (slua443.htm, 8 KB)
17 Dec 2007 Abstract
Using bq24105 as Lead-Acid Charger (slua425.htm, 8 KB)
08 Jun 2007 Abstract
Drive High Current LEDs (slva265.htm, 8 KB)
25 Jan 2007 Abstract
Implementations of Battery Charger and Power-Path Mgmt System Using bq241xx (slua376.htm, 8 KB)
06 Jun 2006 Abstract
Power Dissipation Analysis & Circuit Design for Sync Switching Battery Charger (slua345.htm, 9 KB)
31 May 2005 Abstract

View Application Notes for Battery Charge Management

User Guides

Using the bq241xx bqSWITCHER(tm) (Rev. A) (sluu200a.pdf, 399 KB)
29 Nov 2007 Download

View User Guides for Battery Charge Management

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

Alternative Products - Are similar to BQ24105
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
UC3909	Switch-mode Lead-Acid Battery Charger with Differential Current Sense	TI customers also evaluated this product.
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BQ2954	Switch-mode Li-Ion Charge Controller	TI customers also evaluated this product.
UC3906	Linear Lead-Acid Battery Charger	TI customers also evaluated this product.
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BQ24115	Host-controlled Synchronous, Switch-Mode Li-Ion Charger w/2A FET in QFN-20, 1 to 3 cells	TI customers also evaluated this product.

Complementary Products - Can be used with BQ24105
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TPS3106K33	Ultra Low-Supply Current/Supply-Voltage Supervisory Circuits	POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS)	TI customers also evaluated this product.
TPS2052B	Current-Limited, Power-Distribution Switches	PCMCIA AND USB-USB POWER SWITCHES	TI customers also evaluated this product.
TPS79330	Single Output LDO, 200mA, Fixed(3.0V), High PSRR, Low Noise	LINEAR REGULATORS-SINGLE CHANNEL LDO	TI customers also evaluated this product.
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TPS61042	30-V, 500-mA Switch Boost Converter in QFN-8 for White LED Applications	LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS	TI customers also evaluated this product.
TPS2041B	Single-Channel Current-Limited Power Distribution Switch	PCMCIA AND USB-USB POWER SWITCHES	TI customers also evaluated this product.
TPS40222	1.6A, 1.25-MHz Buck Converter in a 3 mm SON Package	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS75003	Integrated Triple Supply Power Management IC for Xilinx(R) Spartan(TM)-3 FPGAs	POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS FOR ASICs AND FPGAs	TI customers also evaluated this product.
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