BQ2040 Status: ACTIVE

Multi-Chemistry Smart Battery System (SBS) 1.0 Compliant Gas Gauge With 4 LED Drivers

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Datasheet

Gas Gauge IC With SMBus Interface (bq2040.pdf, 371 KB)
05 Sep 1999 Download

	BQ2040
Charge vs Discharge Relationship	C=D
Battery Capacity(Min)(mAh)	800
Battery Capacity(Max)(mAh)	10000
Communication Interface	SMBus
Capacity Indication LEDs(Max)(#)	4
Pin/Package	16SOIC
Approx. Price (US$)	3.85 \| 1ku
	Samples
	Inventory

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BQ20Z75-V160: SBS 1.1-Compliant Gas Gauge and Protection-Enabled IC with Impedance Track(TM)
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TPS61070: Adjustable, 600-mA Switch, 90% Efficient PFM/PWM Boost Converter in ThinSOT-23

Product Information

Features

Provides accurate measurement of available charge in NiCd, NiMH, and Li-Ion batteries
Supports SBS v1.0 data set and two-wire interface
Monitors charge FET in Li-Ion pack protection circuit
Designed for battery pack integration
- Low operating current
- Complete circuit can fit on less than 3/4 square inch of PCB space
Supports SBS charge control commands for NiCd, NiMH, and Li-Ion
Drives a four-segment LED display for remaining capacity indication
16-pin narrow SOIC

Description

The bq2040 Gas Gauge IC With SMBus Interface is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The bq2040 directly supports capacity monitoring for NiCd, NiMH, and Li-Ion battery chemistries.

The bq2040 uses the System Management Bus v1.0 (SMBus) protocol and supports the Smart Battery Data (SBData) commands. The bq2040 also supports the SBData charge control functions. Battery state-of-charge, remaining capacity, remaining time, and chemistry are available over the serial link. Battery-charge state can be directly indicated using a four-segment LED display to graphically depict battery full-to-empty in 25% increments.

The bq2040 estimates battery self-discharge based on an internal timer and temperature sensor and user-programmable rate information stored in external EEPROM. The bq2040 also automatically recalibrates or �learns� battery capacity in the full course of a discharge cycle from full to empty.

The bq2040 may operate directly from three nickel chemistry cells. With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide V_CC for other battery cell configurations.

An external EEPROM is used to program initial values into the bq2040 and is necessary for proper operation.

Pricing / Packaging / CAD Design Tools / Samples

				Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Replaced By	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
BQ2040SN-C408	NRND	0 to 70	BQ2040SN-D111	3.85 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Replaced by BQ2040SN-D111
BQ2040SN-C408G4	NRND	0 to 70		3.85 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Not Available
BQ2040SN-C408TR	NRND	0 to 70	BQ2040SN-D111TR	3.85 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Replaced by BQ2040SN-D111TR
BQ2040SN-C408TRG4	NRND	0 to 70		3.85 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Not Available
BQ2040SN-D111	ACTIVE	0 to 70		3.85 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE
BQ2040SN-D111G4	ACTIVE	0 to 70		3.85 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE
BQ2040SN-D111TR	ACTIVE	0 to 70		3.85 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
BQ2040SN-D111TRG4	ACTIVE	0 to 70		3.85 \| 1ku	SOIC (D) \| 16	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
BQ2040SN-C408	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*	3168 \| 17 Dec	4 Weeks	Americas	Arrow	42
		441 \| 25 Feb			DigiKey	236
		>10k \| 16 Mar			Mouser Electronics	31
					Newark	31
					Rochester Electronics	>1k
				Europe	Farnell	34
BQ2040SN-C408G4	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*	3168 \| 17 Dec	4 Weeks	None Reported View Distributors
		441 \| 25 Feb
		>10k \| 16 Mar
BQ2040SN-C408TR	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*	>10k \| 26 Nov	4 Weeks	Americas	Rochester Electronics	>1k
BQ2040SN-C408TRG4	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*	>10k \| 26 Nov	4 Weeks	None Reported View Distributors
BQ2040SN-D111	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*	1213 \| 17 Dec	4 Weeks	Americas	Mouser Electronics	8
		1000 \| 24 Dec		Americas	Rochester Electronics	>1k
		>10k \| 29 Dec		Asia	WPI	132
BQ2040SN-D111G4	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*	1213 \| 17 Dec	4 Weeks	Americas	Mouser Electronics	198
		1000 \| 24 Dec
		>10k \| 29 Dec
BQ2040SN-D111TR	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*	9047 \| 26 Nov	7 Weeks	Americas	Arrow	>1k
	0*	>10k \| 6 Jan	7 Weeks	Americas	Rochester Electronics	>1k
BQ2040SN-D111TRG4	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*	9047 \| 26 Nov	7 Weeks	None Reported View Distributors
	0*	>10k \| 6 Jan	7 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
BQ2040SN-C408	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ2040SN-C408G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ2040SN-C408TR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ2040SN-C408TRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ2040SN-D111	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ2040SN-D111G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ2040SN-D111TR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ2040SN-D111TRG4	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

Gas Gauge IC With SMBus Interface (bq2040.pdf, 371 KB)
05 Sep 1999 Download

Application Notes

bq2040-D111 to bq2040-C408 Change List (slua295.htm, 8 KB)
20 Oct 2003 Abstract
U-513 Using the bq2040, Smart Battery System Gas Gauge IC (slua233.htm, 8 KB)
05 Sep 1999 Abstract

View Application Notes for Battery Fuel Gauges

User Guides

EV2200 PC Interface Board for Gas Gauge and Battery Monitor Evaluation (Rev. A) (sluu042a.pdf, 53 KB)
04 Jan 2006 Download
bq2040 SBS v1.0 Gas Gauge Demonstration Module (sluu065.htm, 8 KB)
10 Apr 2000 Abstract
bq2040 EVM (sluu061.htm, 8 KB)
10 Apr 2000 Abstract
EV2200-40 Evaluation System User Guide (sluu045.htm, 8 KB)
05 Sep 1999 Abstract
EV2200 PC Interface Board for Gas Gauge Evaluation (sluu042.htm, 8 KB)
05 Sep 1999 Abstract

Tools & Software

Name	Part #	Company	Tool / Software Type
BQ2040 Evaluation Kit for NiMH, 10.8V	BQ2040EVM-001	Texas Instruments	Development Boards/EVMs
EV2200 PC Interface Board	EV2200	Texas Instruments	Development Boards/EVMs
Software for the bq2040(sluc013.zip, 2529 KB ) 25 Jan 2000 zip

Alternative Products - Are similar to BQ2040
Part #	Name	Comments
BQ2060	Multi-Chemistry SBS 1.1 Compliant Gas Gauge With 5 LED Drivers, Additional Battery Mgmt Control	The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.
Customers Who Evaluated This Product Also Evaluated...
BQ20Z75-V160	SBS 1.1-Compliant Gas Gauge and Protection-Enabled IC with Impedance Track(TM)	TI customers also evaluated this product.

Complementary Products - Can be used with BQ2040
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BQ2040 Status: ACTIVE

Multi-Chemistry Smart Battery System (SBS) 1.0 Compliant Gas Gauge With 4 LED Drivers

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