BQ28Z560-R1_14 Datasheet, PDF (1/61 Pages) Texas Instruments – Single Cell Li-Ion Battery Gas Gauge

Not Recommended For New Designs
bq28z560-R1
www.ti.com
SLUSBD3 – APRIL 2013
bq28z560-R1 Single Cell Li-Ion Battery Gas Gauge and Protection
Check for Samples: bq28z560-R1
FEATURES
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•23 A Comprehensive Single Cell Li-Ion Battery
Manager Integrates All Essential Functions:
– Gas Gauge
– Low-Side N-CH FET Protection Control
– JEITA/Enhanced Charging
– Authentication
• Impedance Track™ Gas Gauging
• Protection Functions Help to Prevent:
– Short-Circuit
– Overcurrent Charge and Discharge
– Overvoltage Charge (Overcharge)
– Undervoltage (Over-Discharge)
• Firmware Control of Discharge FET
• SHA-1/HMAC Battery Authentication
• I²C™ Communications Interface or HDQ
Single Wire
• 12-pin, 2.5-mm x 4.0-mm SON Package
APPLICATIONS
• Tablet PCs
• Slates
• Digital Still and Video Cameras
• Handheld Terminals
• MP3 or Multimedia Players
DESCRIPTION
The Texas Instruments bq28z560-R1 device is a battery gas gauge with current and voltage protection, and
secure, SHA-1/HMAC authentication for single-cell Li-Ion battery packs. Designed for battery pack integration,
the bq28z560-R1 requires host microcontroller firmware support for implementation. A system processor
communicates with the bq28z560-R1 using one of two options: an I²C™ serial interface or an HDQ single-wire
configuration to obtain remaining battery capacity, system run-time predictions, and other critical battery
information.
The bq28z560-R1 uses the accurate Texas Instruments Impedance Track™ gas gauging algorithm to report the
status of the cell. The gauge provides information such as state-of-charge (%), run-time to empty (min.), charge
time to full (min.), battery voltage (V), and pack temperature (°C).
The bq28z560-R1 features integrated support for secure battery pack authentication, using the SHA-1/HMAC
authentication algorithm.
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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.
Impedance Track is a trademark of Texas Instruments.
2
I²C is a trademark of NXP B.V. Corporation.
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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