BQ40Z50 Datasheet, PDF (1/30 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq40z50
www.ti.com
SLUSBS8 – DECEMBER 2013
1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager
Check for Samples: bq40z50
FEATURES
1
•2 Fully Integrated 1-Series, 2-Series, 3-Series,
and 4-Series Li-Ion or Li-Polymer Cell Battery
Pack Manager and Protection
• Next-Generation Patented Impedance Track™
Technology Accurately Measures Available
Charge in Li-Ion and Li-Polymer Batteries
• High Side N-CH Protection FET Drive
• Integrated Cell Balancing While Charging or At
Rest
• Full Array of Programmable Protection
Features
– Voltage
– Current
– Temperature
– Charge Timeout
– CHG/DSG FETs
– AFE
• Sophisticated Charge Algorithms
– JEITA
– Enhanced Charging
– Adaptive Charging
– Cell Balancing
• Diagnostic Lifetime Data Monitor
• LED Display
• Supports Two-Wire SMBus v1.1 Interface
• SHA-1 Authentication
• Compact Package: 32-Lead QFN
APPLICATIONS
• Notebook/Netbook PCs
• Medical and Test Equipment
• Portable Instrumentation
DESCRIPTION
The bq40z50 device, incorporating patented
Impedance Track™ technology, is a fully integrated,
single-chip, pack-based solution that provides a rich
array of features for gas gauging, protection, and
authentication for 1-series, 2-series, 3-series, and 4-
series cell Li-Ion and Li-Polymer battery packs.
Using its integrated high-performance analog
peripherals, the bq40z50 device measures and
maintains an accurate record of available capacity,
voltage, current, temperature, and other critical
parameters in Li-Ion or Li-Polymer batteries, and
reports this information to the system host controller
over an SMBus v1.1 compatible interface.
The bq40z50 provides software-based 1st- and 2nd-
level safety protection against overvoltage,
undervoltage, overcurrent, short-circuit current,
overload, and overtemperature conditions, as well as
other pack- and cell-related faults.
SHA-1 authentication, with secure memory for
authentication keys, enables identification of genuine
battery packs.
The compact 32-lead QFN package minimizes
solution cost and size for smart batteries while
providing maximum functionality and safety for
battery gauging applications.
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 © 2013, Texas Instruments Incorporated