BQ76PL536A_16 Datasheet, PDF (1/74 Pages) Texas Instruments – Cell Lithium-Ion Battery Monitor and Secondary Protection IC

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bq76PL536A
SLUSAD3B – JUNE 2011 – REVISED JANUARY 2016
bq76PL536A 3-to-6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC
for Applications
1 Features
•1 3-to-6 Series Cell Support, All Chemistries
• Hot-Pluggable
• High-Speed Serial Peripheral Interface (SPI) for
Data Communications
• Stackable Vertical Interface
• Isolation Components not Required Between
Devices
• Industrial Temperature Range –40°C to 85°C
• High-Accuracy Analog-to-Digital Converter (ADC):
– ±1 mV Typical Accuracy
– 14-Bit Resolution, 6-µs Conversion Time
– Nine ADC Inputs: 6 Cell Voltages, 1 Six-Cell
Brick Voltage, 2 Temperatures, 1 General-
Purpose Input
– Dedicated Pins for Synchronizing
Measurements
• Configuration Data Stored in Error Check/Correct
(ECC)-One-Time-Programmable (OTP) Registers
• Built-In Comparators (Secondary Protector) for:
– Overvoltage and Undervoltage Protection
– Overtemperature Protection
– Programmable Thresholds and Delay Times
– Dedicated Fault Output Signals
• Cell Balancing Control Outputs With Safety
Timeout
– Balance Current Set by External Components
• Supply Voltage Range from 6 V to 30 V
Continuous and 36-V Peak
• Low Power:
– Typical 12-µA Sleep, 45-µA Idle
• Integrated Precision 5-V, 3-mA LDO
3 Description
The bq76PL536A device is a stackable battery
monitor and protector for three-to-six lithium-ion cells
in series. The bq76PL536A integrates an analog front
end (AFE) along with a precision analog-to-digital
converter (ADC), used to precisely measure battery
cell voltages. A separate ADC is used to measure
temperature.
In addition to temperature measurement, overvoltage
and undervoltage are monitored per channel for
protection. Non-volatile memory stores the user-
programmable protection thresholds and delay times.
A FAULT output signals whenever one of these
thresholds is exceeded.
Cell stacks of 192 cells can be supported by stacked
bq76PL536A devices. A high-speed SPI interface
connects all devices.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq76PL536A
HTQFP (64)
10.00 mm × 10.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
PACK +
Simplified Schematic
TO NEXT DEVICE
GPAI
GPIO
CONTROL (North)
SPI
(North)
bq76PL536A
AUX
CELL_6
CBx (6)
CONTROL (South)
SPI
(South)
CELL_1
2 Applications
• Uninterruptible Power Systems (UPS)
• E-Bike and E-Scooter
• Large-Format Battery Systems
REG50
GPAI
GPIO
CONV
DRDY
FAULT
ALERT
SPI
PACK -
CONTROL (North)
SPI
(North)
bq76PL536A
South Interface
(not used on bottom device)
AUX
CBx (6)
CELL_6
CELL_1
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.