Datasheet
bq76PL536A
www.ti.com
SLUSAD3A –JUNE 2011–REVISED 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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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.