BQ20Z90 Status:NRND

SBS 1.1 Compliant Gas Gauge Enabled w/Impedance Track Tech For bq29330

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Product is Not Recommended for New Design (NRND)

Replaced By:

BQ20Z90-V110 The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.

Datasheet

SBS 1.1 Compliant Gas Gauge Enabled w/Impedance Track Tech For bq29330 (Rev. A) (bq20z90.pdf, 640 KB)
07 Jun 2006 Download

bq20z90 Technical Reference (sluu251.pdf, 1913 KB)
09 Jun 2006 Download

bq20z90 EVM (HPA 155 Rev. A) Errata (sluz007.pdf, 87 KB)
07 Jun 2006 Download

	BQ20Z90
Charge vs Discharge Relationship	C=D
Battery Capacity(Min)(mAh)	800
Battery Capacity(Max)(mAh)	15000
Communication Interface	SMBus
Capacity Indication LEDs(Max)(#)	5
Pin/Package	30TSSOP
Approx. Price (US$)	3.30 \| 1ku
	Samples
	Inventory

Product Information

Features

Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
Better than 1% Error Over Lifetime of the Battery
Instant Accuracy — No Learning Cycle Required
Automatically adjusts for battery aging, battery self discharge and temperature inefficiencies
Supports the Smart Battery Specification SBS V1.1
Works With the TI bq29330 Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics Solution
Full Array of Programmable Voltage, Current, and Temperature Protection Features
Integrated Time Base Removes Need for External Crystal with Optional Crystal Input
Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With 50% Fewer External Components
Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory
Measures Charge Flow Using a High-Resolution, 16-Bit Integrating Delta-Sigma Converter
- Better Than 0.65 nVh of Resolution
- Self-Calibrating
Uses 16-Bit Delta-Sigma Converter for Accurate Voltage and Temperature Measurements
Extensive Data Reporting Options For Improved System Interaction
Optional Pulse Charging Feature for Improved Charge Times
Drives 3-, 4- or 5-Segment LED Display for Remaining Capacity Indication
Supports SHA-1 Authentication
Lifetime Data Logging
30-Pin TSSOP (DBT)
APPLICATIONS
- Notebook PCs
- Medical and Test Equipment
- Portable Instrumentation

IMPEDANCE TRACK is a trademark of Texas Instruments.

Description

The bq20z90 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z90 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z90 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, and reports the information to the system host controller over a serial-communication bus. It is designed to work with the bq29330 analog front-end (AFE) protection IC to maximize functionality and safety, and minimize component count and cost in smart battery circuits.

The Impedance Track technology continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle.

Pricing / Packaging / CAD Design Tools / Samples

			Price ($US)	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price ($US) \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
BQ20Z90DBT	ACTIVE	-40 to 85	3.30 \| 1ku	TSSOP (DBT) \| 30	View	60 \| TUBE	Purchase Samples
BQ20Z90DBTG4	ACTIVE	-40 to 85	3.30 \| 1ku	TSSOP (DBT) \| 30	View	60 \| TUBE	Purchase Samples
BQ20Z90DBTR	ACTIVE	-40 to 85	3.30 \| 1ku	TSSOP (DBT) \| 30	View	2000 \| LARGE T&R	Purchase Samples
BQ20Z90DBTRG4	ACTIVE	-40 to 85	3.30 \| 1ku	TSSOP (DBT) \| 30	View	2000 \| 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
BQ20Z90DBT	As of 8:59 AM GMT, 07 Sep 2008			As of 8:59 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	19 \| 8 Sep	6 Weeks	Americas	Arrow	120
		1404 \| 16 Sep			DigiKey	60
		>10k \| 16 Oct			Mouser Electronics	177
					Newark	30
					Rochester Electronics	812
BQ20Z90DBTG4	As of 8:59 AM GMT, 07 Sep 2008			As of 8:59 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	19 \| 8 Sep	6 Weeks	None Reported View Distributors
		1404 \| 16 Sep
		>10k \| 16 Oct
BQ20Z90DBTR	As of 8:59 AM GMT, 07 Sep 2008			As of 8:59 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 16 Oct	6 Weeks	None Reported View Distributors
BQ20Z90DBTRG4	As of 8:59 AM GMT, 07 Sep 2008			As of 8:59 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 16 Oct	6 Weeks	None Reported View Distributors
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
BQ20Z90DBT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ20Z90DBTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ20Z90DBTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ20Z90DBTRG4	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

SBS 1.1 Compliant Gas Gauge Enabled w/Impedance Track Tech For bq29330 (Rev. A) (bq20z90.pdf, 640 KB)
07 Jun 2006 Download

bq20z90 Technical Reference (sluu251.pdf, 1913 KB)
09 Jun 2006 Download
bq20z90 EVM (HPA 155 Rev. A) Errata (sluz007.pdf, 87 KB)
07 Jun 2006 Download

Application Notes

Information to Provide when Reporting Issues with TI Gauges (slua474.htm, 8 KB)
18 Jul 2008 Abstract
bq20z70, bq20z75, bq20z90, and bq20z95 Voltage Current & Measurement Accuracy (slua459.htm, 8 KB)
18 Mar 2008 Abstract
bq20z90-V110 to bq20z90-V150 Change List (slua451.htm, 8 KB)
11 Jan 2008 Abstract
Cell-type Specific Settings for Cell Imbalance Permanent Failure Thresholds (slua433.htm, 8 KB)
28 Sep 2007 Abstract
Quick-Start Guide for bq20zxx Family Gas Gauges (Rev. A) (slua421a.htm, 8 KB)
04 Sep 2007 Abstract
Fast Cell Balancing Using External MOSFET (slua420.htm, 8 KB)
03 May 2007 Abstract
Evaluation 3: Theory/Implementation Impedance Track Battery Fuel-Gauging Algo (Rev. B) (slua364b.htm, 8 KB)
20 Dec 2006 Abstract
Configuring the bq20z90 Data Flash (slua406.htm, 8 KB)
20 Dec 2006 Abstract
bq20z70 and bq20z90 Application Book (slua404.htm, 8 KB)
13 Dec 2006 Abstract
Evaluation 7: Preparing Optimized Data Flash Constants (Rev. B) (slua334b.htm, 8 KB)
04 Dec 2006 Abstract
Exploring the bq20z70/90 Impedance Track(TM) Evaluation Kit (slua396.htm, 8 KB)
27 Nov 2006 Abstract
Cell Balancing Using the bq20zxx (Rev. B) (slua340b.htm, 8 KB)
09 Nov 2006 Abstract
Updating Firmware With the bq20zxx and EVM (Rev. B) (slua336b.htm, 8 KB)
07 Nov 2006 Abstract
Pack Assembly and the bq20zxx (Rev. B) (slua335b.htm, 8 KB)
07 Nov 2006 Abstract
bq20z80 EVM Data Flash Settings for Num of Serial Cells/Pack Cap (Rev. B) (slva208b.htm, 8 KB)
06 Nov 2006 Abstract
bq20z90 (v1.10) Change List (slua403.htm, 8 KB)
18 Oct 2006 Abstract
Evaluation 1: Impedance Track Gas Gauge for Novice – bq20z70/z90 (slua397.htm, 8 KB)
09 Oct 2006 Abstract
Thermistor Coefficient Calculator for TI Advanced Fuel Gauges (slua398.htm, 8 KB)
04 Oct 2006 Abstract
bq20z70/90 Gas Gauge Circuit Design (slua393.htm, 8 KB)
23 Aug 2006 Abstract
bq20z70/90 Printed-Circuit Board Layout Guide (slua392.htm, 8 KB)
02 Aug 2006 Abstract
Battery Pack Production Flow With bq20zXX (slua391.htm, 8 KB)
02 Aug 2006 Abstract
Production 2: Data Flash Programing & Calibrating the bq20z70/90 (slua379.htm, 8 KB)
25 May 2006 Abstract
Evaluation 3: Theory/Implementation Impedance Track Battery Fuel-Gauging Algo (slua364.htm, 8 KB)
25 Nov 2005 Abstract
Design 2: Avoiding ESD and EMI Problems in bq20zxx Battery Pack Electronics (slua368.htm, 8 KB)
11 Nov 2005 Abstract

View Application Notes for Battery Fuel Gauges

User Guides

bq20z90EVM-001 SBS1.1 Impedance Track(TM) Technology (sluu234.htm, 9 KB)
02 Mar 2006 Abstract

More Literature

Notebook Computer Solutions Guide (slyy016.pdf, 956 KB)
01 Aug 2006 Download

Tools & Software

Name	Part #	Company	Tool / Software Type
BQ20Z90EVM Evaluation Module for 2nd Generation Impedance Track(TM)	BQ20Z90EVM-001	Texas Instruments	Development Boards/EVMs
BQMTESTER Multi Channel Test and Program Board	BQMTESTER	Texas Instruments	Development Boards/EVMs
Single Channel Tester	BQTESTER	Texas Instruments	Development Boards/EVMs
Chemistry Updater Setup 1.13 (Rev. G)(sluc066g.zip, 1038 KB ) 14 May 2008 zip
bq20z90-V102 Multiple Li-Ion Chemistries Software(sluc059.zip, 719 KB ) 11 Jul 2006 zip

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