Datasheet Texas Instruments BQ27421YZFT-G1A

System-Side(tm) Fuel Gauge With Integrated Sense Resistor | Battery Gas Gauge 9-DSBGA -40 to 85

Datasheets

PDF, 1.1 Mb, Revision: E, File published: Jan 6, 2016

Extract from the document

Lifecycle Status	Active (Recommended for new designs)
Manufacture's Sample Availability	No

Battery Capacity(Max)	8000 mAh
Battery Capacity(Min)	100 mAh
Cell Balancing	N/A
Cell Chemistry	Li-Ion/Li-Polymer
Communication Interface	I2C
External Capacity Indication	None
Gas Gauge Algorithm	IT (High accuracy)
Implementation	System
Number of Series Cells	Single Cell
Operating Temperature Range	-40 to 85 C
Package Group	DSBGA
Package Size: mm2:W x L	See datasheet (DSBGA) PKG
Pin/Package	9DSBGA
Rating	Catalog
Special Features	Integrated Sense Resistor

RoHS

Compliant

Evaluation Modules & Boards: BQ27421EVM-G1B
BQ27421EVM-G1B System-Side Battery Fuel (Gas) Gauge Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
- Download
Evaluation Modules & Boards: BQ27421EVM-G1A
BQ27421EVM-G1A System-Side Battery Fuel (Gas) Gauge Evaluation Module Board
Lifecycle Status: Active (Recommended for new designs)
- Download
Development Kits: BQ27GDK000EVM
Gauge Development Kit (GDK)
Lifecycle Status: Active (Recommended for new designs)
- Download
Evaluation Modules & Boards: EV2400
USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
- Download
Evaluation Modules & Boards: EV2300
USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation
Lifecycle Status: Active (Recommended for new designs)
- Download

Download
Single Cell Gas Gauge Circuit Design
PDF, 154 Kb, File published: Feb 22, 2008
Download
Verification and Accuracy Test Methods of Gas Gauges
PDF, 51 Kb, File published: Jun 5, 2013
Download
Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm
PDF, 608 Kb, File published: Jan 31, 2008
This application report outlines the theory of Impedance Trackв„ў (IT) technology used in the bq2750x series of fuel gauge ICs for single-cell Li-ion applications (e.g., smart phones, media players, and PDAs). The implementation of the IT algorithm in the bq2750x family is reviewed, and the settings of data flash constants associated with the fuel-gauging algorithm is described in detail.
Download
Single Cell Impedance Track Printed-Circuit Board Layout
PDF, 403 Kb, File published: Feb 22, 2008
bq20z70/90 Printed-Circuit Board Layout Guide
Download
Going to Production With the bq274xx Family of Gas Gauges
PDF, 1.2 Mb, File published: Jun 27, 2011
This application report presents a strategy for high-speed, economical calibration and production programming of the bq274xx single-cell gas gauge. Flowchart examples are provided, along with step-by-step instructions for preparing a calibration data set that is required when creating the Golden Data Flash Image (DFI) that is programmed into all bq274xx devices on the production line.
Download
Low-Power, Long Runtime Fuel Gauging Scheme
PDF, 52 Kb, File published: Oct 11, 2013

Series: BQ27421-G1 (6)

Semiconductors > Power Management > Battery Management Products > Battery Fuel Gauge

BQ27421YZFTG1A, BQ27421YZFT G1A