bq3050
www.ti.com
SLUSA92A –JANUARY 2011–REVISED JUNE 2011
2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager
Check for Samples: bq3050
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FEATURES
DESCRIPTION
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Fully Integrated 2-Series, 3-Series, and
4-Series Li-Ion or Li-Polymer Cell Battery Pack
Manager and Protection
Advanced Compensated End-of-Discharge
Voltage (CEDV) Gauging
High Side N-CH Protection FET Drive
Integrated Pre-Charge FET
Integrated Cell Balancing
Low Power Modes
The bq3050 device is a fully integrated, single-chip,
pack-based solution that provides a rich array of
features for gas gauging, protection, and
authentication for 2-series, 3-series, and 4-series cell
Li-Ion and Li-Polymer battery packs.
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Using its integrated high-performance analog
peripherals, the bq3050 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.
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Low Power: < 180 µA
Sleep < 76 µA
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Full Array of Programmable Protection
Features
The bq3050 provides software-based 1st-level and
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Voltage
Current
Temperature
2nd-level
safety
protection
for
overvoltage,
undervoltage, overtemperature, and overcharge
conditions, as well as hardware-based protection for
overcurrent in discharge and short circuit in charge
and discharge conditions.
Sophisticated Charge Algorithms
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JEITA
Enhanced Charging
Adaptive Charging
SHA-1 authentication with secure memory for
authentication keys enables identification of genuine
battery packs beyond any doubt.
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Supports Two-Wire SMBus v1.1 Interface
SHA-1 Authentication
Compact Package: 38-Lead TSSOP
The compact 38-lead TSSOP package minimizes
solution cost and size for smart batteries while
providing maximum functionality and safety for
battery gauging applications.
APPLICATIONS
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Notebook/Netbook PCs
Medical and Test Equipment
Portable Instrumentation
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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.
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