Datasheet
bq76PL536-Q1
www.ti.com
SLUSAB1 –MAY 2011
3 to 6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for EV and
HEV Applications
Check for Samples: bq76PL536-Q1
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FEATURES
APPLICATIONS
• Electric and Hybrid Electric Vehicles
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• 3 to 6 Series Cell Support, All Chemistries
• E-Bike and E-Scooter
• Hot-Pluggable
• Uninterruptible Power Systems (UPS)
• High-Speed SPI for Data Communications
• Large-Format Battery Systems
• Stackable Vertical Interface
• No Isolation Components Required Between
DESCRIPTION
ICs
The bq76PL536-Q1 is a stackable three to six series
• Qualified for Automotive Applications
cell lithium-ion battery pack protector and analog front
end (AFE) that incorporates a precision
• Temperature Range –40°C to 105°C
analog-to-digital converter (ADC); independent cell
• High-Accuracy Analog-to-Digital Converter
voltage and temperature protection; cell balancing,
(ADC):
and a precision 5-V regulator to power user circuitry.
– ±1 mV Typical Accuracy
The bq76PL536-Q1 integrates a voltage translation
– 14-Bit Resolution, 6-µs Conversion Time
and precision analog-to-digital converter system to
– Nine ADC Inputs: 6 Cell Voltages, 1 Six-Cell
measure battery cell voltages with high accuracy and
speed.
Brick Voltage, 2 Temperatures, 1
General-Purpose Input
The bq76PL536-Q1 provides full protection
– Dedicated Pins for Synchronizing
(secondary protection) for overvoltage, undervoltage,
Measurements
and overtemperature conditions. When safety
thresholds are exceeded, the bq76PL536-Q1 sets the
• Configuration Data Stored in ECC-OTP
FAULT output. No external components are needed
Registers
to configure or enable the protection features.
• Built-In Comparators (Secondary Protector)
Cell voltage and temperature protection functions are
for:
independent of the ADC system. Programmable
– Over- and Undervoltage Protection
protection thresholds and detection delay times are
– Overtemperature Protection
stored in Error Check/Correct (ECC) OTP EPROM,
which increases the flexibility and reliability of the
– Programmable Thresholds and Delay Times
battery management system.
– Dedicated Fault Output Signals
The bq76PL536-Q1 is intended to be used with a
• Cell Balancing Control Outputs With Safety
host controller to maximize the functionality of the
Timeout
battery management system. However, the protection
– Balance Current Set by External
functions do not require a host controller.
Components
The bq76PL536Q1 can be stacked vertically to
• Supply Voltage Range from 6 V to 30 V
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
bq76PL536-Q1 to provide reliable communications
– Typical 12-µA Sleep, 45-µA Idle
through a high-voltage battery cell stack.
• Integrated Precision 5-V, 3-mA LDO
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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, 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.