Datasheet

bq76PL536A
www.ti.com
SLUSAD3A JUNE 2011REVISED AUGUST 2012
3 to 6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for
Applications
Check for Samples: bq76PL536A
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FEATURES
APPLICATIONS
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3 to 6 Series Cell Support, All Chemistries
Uninterruptible Power Systems (UPS)
Hot-Pluggable E-Bike and E-Scooter
High-Speed SPI for Data Communications Large-Format Battery Systems
Stackable Vertical Interface
DESCRIPTION
No Isolation Components Required Between
The bq76PL536A is a stackable three to six series
ICs
cell lithium-ion battery pack protector and analog front
Industrial Temperature Range –40°C to 85°C
end (AFE) that incorporates a precision analog-to-
High-Accuracy Analog-to-Digital Converter
digital converter (ADC); independent cell voltage and
temperature protection; cell balancing, and a
(ADC):
precision 5-V regulator to power user circuitry.
±1 mV Typical Accuracy
The bq76PL536A integrates a voltage translation and
14-Bit Resolution, 6-µs Conversion Time
precision analog-to-digital converter system to
Nine ADC Inputs: 6 Cell Voltages, 1 Six-Cell
measure battery cell voltages with high accuracy and
Brick Voltage, 2 Temperatures, 1 General-
speed.
Purpose Input
The bq76PL536A provides full protection (secondary
Dedicated Pins for Synchronizing
protection) for overvoltage, undervoltage, and
Measurements
overtemperature conditions. When safety thresholds
Configuration Data Stored in ECC-OTP
are exceeded, the bq76PL536A sets the FAULT
Registers
output. No external components are needed to
configure or enable the protection features.
Built-In Comparators (Secondary Protector)
for:
Cell voltage and temperature protection functions are
Over- and Undervoltage Protection independent of the ADC system. Programmable
protection thresholds and detection delay times are
Overtemperature Protection
stored in Error Check/Correct (ECC) OTP EPROM,
Programmable Thresholds and Delay Times
which increases the flexibility and reliability of the
Dedicated Fault Output Signals
battery management system.
Cell Balancing Control Outputs With Safety
The bq76PL536A is intended to be used with a host
Timeout
controller to maximize the functionality of the battery
management system. However, the protection
Balance Current Set by External
functions do not require a host controller.
Components
Supply Voltage Range from 6 V to 30 V
The bq76PL536A can be stacked vertically to monitor
up to 192 cells without additional isolation
Continuous and 36 V Peak
components between ICs. A high-speed serial
Low Power:
peripheral interface (SPI) bus operates between each
Typical 12-µA Sleep, 45-µA Idle
bq76PL536A to provide reliable communications
Integrated Precision 5-V, 3-mA LDO
through a high-voltage battery cell stack.
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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.
2PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2011–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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