BQ29410 Status: ACTIVE

Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.35V)

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Datasheet

Voltage Protection for 2-, 3-, or 4-Cell Li-Ion Batteries (2nd Level Protection) (Rev. G) (bq29410.pdf, 358 KB)
18 Aug 2008 Download

	BQ29410	BQ29411	BQ29412	BQ29413	BQ29414	BQ29415	BQ29419
Cells Protected(Max)	4	4	4	4	4	4	4
Overvoltage Threshold(V)	4.35	4.40	4.45	4.5	4.55	4.6	4.30
Protection FETs	External	External	External		External	External	External
Shutdown Current(uA)	2	2	2	2	2	2	2
Pin/Package	8SM8,8TSSOP	8SM8,8TSSOP	8SM8,8TSSOP	8SM8,8TSSOP	8SM8,8TSSOP	8SM8,8TSSOP	8TSSOP
Approx. Price (US$)	0.45 \| 1ku	0.45 \| 1ku	0.45 \| 1ku	0.45 \| 1ku	0.45 \| 1ku	0.45 \| 1ku	0.45 \| 1ku
	Samples	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

BQ29330: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
BQ29400: 2nd Level Over Voltage Protection for 2, 3, or 4 Cell LiIon & LiPoly Batteries (2nd Lev Protection)
BQ20Z75-V160: SBS 1.1-Compliant Gas Gauge and Protection-Enabled IC with Impedance Track(TM)

Product Information

Features

2-, 3-, or 4-Cell SecondaryProtection
Low Power Consumption I_CC < 2 µA [VCELL_(ALL) < V_(PROTECT)]
Fixed High Accuracy Overvoltage Protection Threshold
- bq29410 = 4.35 V
- bq29411 = 4.40 V
- bq29412 = 4.45 V
- bq29413 = 4.50 V
- bq29414 = 4.55 V
- bq29415 = 4.60 V
- bq29419 = 4.30 V
Programmable Delay Time of Detection
High Power Supply Ripple Rejection
Stable During Pulse Charge Operation
APPLICATIONS
- 2^nd-Level Overvoltage Protection in Li-Ion Battery Packs in:
  - Notebook Computers
  - Portable Instrumentation
  - Portable Equipment

Description

The bq2941x is a secondary overvoltage protection IC for 2-, 3-, or 4-cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit. It includes a programmable delay circuit for overvoltage detection time.

FUNCTION

Each cell in a multiple-cell pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq2941x device starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes from a low level to a high level.

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	Footprints	Samples
BQ29410DCT3R	ACTIVE	-40 to 110	0.45 \| 1ku	SM8 (DCT) \| 8		3000 \| LARGE T&R
BQ29410DCT3RE6	ACTIVE	-40 to 110	0.45 \| 1ku	SM8 (DCT) \| 8		3000 \| LARGE T&R
BQ29410DCTR	ACTIVE	-40 to 110	0.45 \| 1ku	SM8 (DCT) \| 8		3000 \| LARGE T&R
BQ29410DCTRG4	ACTIVE	-40 to 110	0.45 \| 1ku	SM8 (DCT) \| 8		3000 \| LARGE T&R
BQ29410DCTT	ACTIVE	-40 to 110	0.51 \| 1ku	SM8 (DCT) \| 8		250 \| SMALL T&R	Purchase Samples
BQ29410DCTTG4	ACTIVE	-40 to 110	0.51 \| 1ku	SM8 (DCT) \| 8		250 \| SMALL T&R	Purchase Samples
BQ29410PW	ACTIVE	-40 to 110	0.45 \| 1ku	TSSOP (PW) \| 8	View	150 \| TUBE
BQ29410PWR	ACTIVE	-40 to 110	0.45 \| 1ku	TSSOP (PW) \| 8	View	2000 \| LARGE T&R	Purchase Samples
BQ29410PWRG4	ACTIVE	-40 to 110	0.45 \| 1ku	TSSOP (PW) \| 8	View	2000 \| 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
BQ29410DCT3R	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 2 Jan	6 Weeks	Americas	DigiKey	>1k
BQ29410DCT3RE6	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 2 Jan	6 Weeks	None Reported View Distributors
BQ29410DCTR	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 11 Dec	4 Weeks	Americas	DigiKey	>1k
BQ29410DCTRG4	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 11 Dec	4 Weeks	None Reported View Distributors
BQ29410DCTT	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 2 Jan	6 Weeks	None Reported View Distributors
BQ29410DCTTG4	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 2 Jan	6 Weeks	None Reported View Distributors
BQ29410PW	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 5 Jan	6 Weeks	Americas	DigiKey	91
	0*		6 Weeks	Americas	Newark	578
BQ29410PWR	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	10k \| 11 Dec	4 Weeks	None Reported View Distributors
	0*	>10k \| 5 Jan	4 Weeks
BQ29410PWRG4	As of 10:11 AM GMT, 04 Dec 2008			As of 10:11 AM GMT, 04 Dec 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 12 Jan	6 Weeks	Americas	DigiKey	59
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
BQ29410DCT3R	Pb-Free (RoHS)	CU SNBI	Level-1-260C-UNLIM	View	View
BQ29410DCT3RE6	Pb-Free (RoHS)	CU SNBI	Level-1-260C-UNLIM	View	View
BQ29410DCTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ29410DCTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ29410DCTT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ29410DCTTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ29410PW	TBD	CU NIPDAU	Level-1-220C-UNLIM	View	View
BQ29410PWR	TBD	CU NIPDAU	Level-1-220C-UNLIM	View	View
BQ29410PWRG4	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

Voltage Protection for 2-, 3-, or 4-Cell Li-Ion Batteries (2nd Level Protection) (Rev. G) (bq29410.pdf, 358 KB)
18 Aug 2008 Download

Application Notes

Five to Eight-Series-Cell bq20z80 Fuel Gauge (slua435.htm, 8 KB)
10 Sep 2007 Abstract
Stacking Multiple bqq2941x Li-Ion Secondary Voltage Protectors (slua434.htm, 8 KB)
27 Aug 2007 Abstract

Tools & Software

Name	Part #	Company	Tool / Software Type
BQ20Z70EVM Evaluation Module for 2nd Generation Impedance Track(TM)	BQ20Z70EVM-001	Texas Instruments	Development Boards/EVMs
BQ20Z90EVM Evaluation Module for 2nd Generation Impedance Track(TM)	BQ20Z90EVM-001	Texas Instruments	Development Boards/EVMs

Alternative Products - Are similar to BQ29410
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
BQ29330	Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE	TI customers also evaluated this product.
BQ29400	2nd Level Over Voltage Protection for 2, 3, or 4 Cell LiIon & LiPoly Batteries (2nd Lev Protection)	TI customers also evaluated this product.

Complementary Products - Can be used with BQ29410
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
BQ20Z75-V160	SBS 1.1-Compliant Gas Gauge and Protection-Enabled IC with Impedance Track(TM)	BATTERY MANAGEMENT-BATTERY FUEL GAUGES	TI customers also evaluated this product.

BQ29410 Status: ACTIVE

Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.35V)

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Datasheet

Customers Who Evaluated This Product Also Evaluated