BQ2002T Status: ACTIVE

NiCd/NiMH Charge Controller with dT/dt Termination

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Datasheet

NiCD/NiMH Fast-Charge Management ICs (Rev. C) (bq2002t.pdf, 540 KB)
16 Jul 2008 Download

	BQ2002T
# Series Cells	Multiple
Charge Current(Max)(A)	>2
Charge Status Outputs	1
Control Topology	Current Limited
Primary Charge Termination Method	dT/dt
Pin/Package	8PDIP,8SOIC
Vin(Max)(V)	7
	Samples
	Inventory

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BQ2002: NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection Termination
BQ2002E: NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection Termination
BQ2002G: NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection Termination

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Product Information

Features

Fast charge of nickel cadmium or nickel-metal hydride batteries
Direct LED output displays charge status
Fast-charge termination by rate of rise of temperature, maximum voltage, maximum
temperature, and maximum time
Internal band-gap voltage reference
Optional top-off charge (bq2002T only)
Selectable pulse-trickle charge rates (bq2002T only)
Low-power mode
8-pin 300-mil DIP or 150-mil SOIC

Description

The bq2002D/T Fast-Charge IC are low-cost CMOS battery-charge controllers able to provide reliable charge termination for both NiCd and NiMH battery applications. Controlling a current-limited or constant-current supply allows the bq2002D/T to be the basis for a cost-effective stand-alone or system-integrated charger. The bq2002D/T integrates fast charge with optional top-off and pulsed-trickle control in a single IC for charging one or more NiCd or NiMH battery cells.

Fast charge is initiated on application of the charging supply or battery replacement. For safety, fast charge is inhibited if the battery temperature and voltage are outside configured limits.

Fast charge is terminated by any of the following:

Rate of temperature rise
Maximum voltage
Maximum temperature
Maximum time

After fast charge, the bq2002T optionally tops-off and pulse-trickles the battery per the pre-configured limits. Fast charge may be inhibited using the INH pin. The bq2002D/T may be placed in low-standby-power mode to reduce system power consumption.

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
BQ2002TPN	ACTIVE	0 to 70	1.05 \| 100u	PDIP (P) \| 8	View	50 \| TUBE
BQ2002TPNE4	ACTIVE	0 to 70	1.05 \| 100u	PDIP (P) \| 8	View	50 \| TUBE
BQ2002TSN	ACTIVE	0 to 70	1.05 \| 100u	SOIC (D) \| 8	View	75 \| TUBE
BQ2002TSNG4	ACTIVE	0 to 70	1.05 \| 100u	SOIC (D) \| 8	View	75 \| TUBE
BQ2002TSNTR	ACTIVE	0 to 70	1.05 \| 100u	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
BQ2002TSNTRG4	ACTIVE	0 to 70	1.05 \| 100u	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples

* 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
BQ2002TPN	As of 10:16 AM GMT, 19 Nov 2008			As of 10:16 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	5850*		1 Weeks	Americas	Arrow	40
					DigiKey	116
					Mouser Electronics	243
					Newark	300
					Rochester Electronics	>1k
				Europe	Arrow Southern Europe	150
				Europe	Farnell	77
BQ2002TPNE4	As of 10:16 AM GMT, 19 Nov 2008			As of 10:16 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	5850*		1 Weeks	None Reported View Distributors
BQ2002TSN	As of 10:16 AM GMT, 19 Nov 2008			As of 10:16 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	3450 \| 26 Nov	4 Weeks	Americas	Arrow	193
		>10k \| 17 Dec			Avnet	>1k
					DigiKey	>1k
					Mouser Electronics	926
					Newark	62
				Europe	Arrow Southern Europe	7
BQ2002TSNG4	As of 10:16 AM GMT, 19 Nov 2008			As of 10:16 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	3450 \| 26 Nov	4 Weeks	Americas	Avnet	48
	0*	>10k \| 17 Dec	4 Weeks
BQ2002TSNTR	As of 10:16 AM GMT, 19 Nov 2008			As of 10:16 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	4128 \| 26 Nov	4 Weeks	Americas	Avnet	>1k
	0*	>10k \| 17 Dec	4 Weeks	Americas	Rochester Electronics	>1k
BQ2002TSNTRG4	As of 10:16 AM GMT, 19 Nov 2008			As of 10:16 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	4128 \| 26 Nov	4 Weeks	None Reported View Distributors
	0*	>10k \| 17 Dec	4 Weeks
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
BQ2002TPN	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
BQ2002TPNE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
BQ2002TSN	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ2002TSNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ2002TSNTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ2002TSNTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	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 TI Recommends

Datasheets

NiCD/NiMH Fast-Charge Management ICs (Rev. C) (bq2002t.pdf, 540 KB)
16 Jul 2008 Download

Application Notes

Battery Charger Termination Issues With System Load Applied Across Battery (Rev. A) (slva166a.htm, 8 KB)
02 Oct 2006 Abstract
Battery Charger Termination Issues With System Load Applied Across Battery (slva166.htm, 8 KB)
21 Apr 2004 Abstract

View Application Notes for Battery Charge Management

User Guides

bq2002 Selection Table (sluu229.pdf, 51 KB)
30 Aug 2005 Download
DV2002L2/TL2 Fast Charge Development System Control of LM317 Linear Regulator (Rev. A) (sluu007a.pdf, 71 KB)
28 Mar 1998 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
BQ2002T Evaluation Module for NiCd/NiMH, Linear with Temperature Termination	DV2002TL2	Texas Instruments	Development Boards/EVMs

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BQ2002E	NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection Termination	TI customers also evaluated this product.
BQ2002G	NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection Termination	TI customers also evaluated this product.
BQ2002D	NiCd/NiMH Charge Controller with dT/dt Termination	TI customers also evaluated this product.

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