bq34z651 IC Datasheet

bq34z651 Datasheet PDF, Equivalent


Part Number

bq34z651

Description

SBS 1.1-COMP GG AND PRTCTN-ENBLD IC

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download bq34z651 Datasheet


bq34z651
bq34z651
www.ti.com
SLUSAL7 AUGUST 2011
SBS 1.1-Compliant Gas Gauge and Protection Enabled With Impedance Trackand
External Battery Heater Control
Check for Samples: bq34z651
FEATURES
1
2 Next Generation Patented Impedance Track
Technology Accurately Measures Available
Charge in Li-Ion and Li-Polymer Batteries
Better Than 1% Error Over the Lifetime of
the Battery
Supports the Smart Battery Specification
SBS v1.1
Flexible Configuration for 2-Series to 4-Series
Li-Ion and Li-Polymer Cells
Battery Temperature Heater Control
Powerful 8-Bit RISC CPU with Ultralow Power
Modes
Full Array of Programmable Protection
Features
Voltage, Current, and Temperature
Satisfies JEITA Guidelines
Added Flexibility to Handle More Complex
Charging Profiles
Lifetime Data Logging
Drives 3-, 4-, and 5-Segment LED Display for
Battery-Pack Conditions
Supports SHA-1 Authentication
Complete Battery Protection and Gas Gauge
Solution in One Package
Available in a 44-Pin TSSOP (DBT) package
APPLICATIONS
Notebook PCs
Medical and Test Equipment
Portable Instrumentation
DESCRIPTION
The bq34z651 SBS-compliant gas gauge and
protection IC, incorporating patented Impedance
Tracktechnology, is a single IC solution designed
for battery-pack or in-system installation. The
bq34z651 measures and maintains an accurate
record of available charge in Li-Ion or Li-Polymer
batteries using its integrated high-performance
analog peripherals. The bq34z651 monitors capacity
change, battery impedance, open-circuit voltage, and
other critical parameters of the battery pack, which
reports the information to the system host controller
over a serial-communication bus. Together with the
integrated analog front-end (AFE) short-circuit and
overload protection, the bq34z651 maximizes
functionality and safety while minimizing external
component count, cost, and size in smart battery
circuits.
The implemented Impedance Track gas gauging
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
agingall accounted for during each stage of every
cycle with high accuracy.
TA
40°C to 85°C
Table 1. AVAILABLE OPTIONS
PACKAGE (1)
44-PIN TSSOP (DBT) Tube
bq34z651DBT (2)
44-PIN TSSOP (DBT) Tape and Reel
bq34z651DBTR (3)
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
(2) A single tube quantity is 40 units.
(3) A single reel quantity is 2000 units.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Impedance Track is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated

bq34z651
bq34z651
SLUSAL7 AUGUST 2011
www.ti.com
THERMAL INFORMATION
THERMAL METRIC(1)
bq34z651
TSSOP
UNITS
θJA, High K
θJC(top)
θJB
ψJT
ψJB
θJC(bottom)
Junction-to-ambient thermal resistance(2)
Junction-to-case(top) thermal resistance (3)
Junction-to-board thermal resistance (4)
Junction-to-top characterization parameter (5)
Junction-to-board characterization parameter (6)
Junction-to-case(bottom) thermal resistance (7)
44 PINS
60.9
15.3
30.2
0.3
27.2
n/a
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) The junction-to-ambient thermal resistance under natural convection is obtained in a simulation on a JEDEC-standard, high-K board, as
specified in JESD51-7, in an environment described in JESD51-2a.
(3) The junction-to-case (top) thermal resistance is obtained by simulating a cold plate test on the package top. No specific
JEDEC-standard test exists, but a close description can be found in the ANSI SEMI standard G30-88.
(4) The junction-to-board thermal resistance is obtained by simulating in an environment with a ring cold plate fixture to control the PCB
temperature, as described in JESD51-8.
(5) The junction-to-top characterization parameter, ψJT, estimates the junction temperature of a device in a real system and is extracted
from the simulation data for obtaining θJA, using a procedure described in JESD51-2a (sections 6 and 7).
(6) The junction-to-board characterization parameter, ψJB, estimates the junction temperature of a device in a real system and is extracted
from the simulation data for obtaining θJA , using a procedure described in JESD51-2a (sections 6 and 7).
(7) The junction-to-case (bottom) thermal resistance is obtained by simulating a cold plate test on the exposed (power) pad. No specific
JEDEC standard test exists, but a close description can be found in the ANSI SEMI standard G30-88.
2 Copyright © 2011, Texas Instruments Incorporated


Features bq34z651 www.ti.com SLUSAL7 – AUGUST 2011 SBS 1.1-Compliant Gas Gauge and Protection Enabled With Impedance Track ™ and External Battery Heater Contro l Check for Samples: bq34z651 FEATURE S 1 •2 Next Generation Patented Imped ance Track™ Technology Accurately Mea sures Available Charge in Li-Ion and Li -Polymer Batteries – Better Than 1% E rror Over the Lifetime of the Battery Supports the Smart Battery Specifica tion SBS v1.1 • Flexible Configuratio n for 2-Series to 4-Series Li-Ion and L i-Polymer Cells • Battery Temperature Heater Control • Powerful 8-Bit RISC CPU with Ultralow Power Modes • Full Array of Programmable Protection Featu res – Voltage, Current, and Temperatu re • Satisfies JEITA Guidelines • A dded Flexibility to Handle More Complex Charging Profiles • Lifetime Data Lo gging • Drives 3-, 4-, and 5-Segment LED Display for Battery-Pack Conditions • Supports SHA-1 Authentication • Complete Battery Protection and Gas Gauge Solution in One Package • Available in a 44-Pin TSSOP (.
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