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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11080 Datasheet

High-Voltage Battery-Pack Fault Monitor

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19-4584; Rev 1; 6/10
EVAALVUAAILTAIOBNLEKIT
12-Channel, High-Voltage
Battery-Pack Fault Monitors
General Description
The MAX11080/MAX11081 are battery-pack fault-moni-
tor ICs capable of monitoring up to 12 lithium-ion (Li+)
battery cells. This device is designed to provide an
overvoltage or undervoltage fault indication when any
of the cells cross the user-selectable threshold for
longer than the set program-delay interval. The over-
voltage levels are pin selectable from +3.3V to +4.8V
in 100mV increments, and have a guaranteed accura-
cy of ±25mV over the entire temperature range. The
undervoltage level is also user selectable from +1.6V
to +2.8V in 200mV increments. These levels are guar-
anteed to ±100mV over the entire temperature range.
Undervoltage detection can be disabled as one of the
user-configuration options.
The MAX11080/MAX11081 have a built-in level-shifter
that allows up to 31 MAX11080/MAX11081 devices to
be connected in a daisy-chain fashion to reduce the
number of interface signals needed for large stacks of
series batteries. Each cell is monitored differentially and
compared to the overvoltage and undervoltage thresh-
olds. When any of the cells exceed this threshold for
longer than the set program delay interval, the
MAX11080/MAX11081 inhibit the heartbeat signal from
being passed down the daisy-chain. Built-in compara-
tor hysteresis prevents threshold chattering.
The MAX11080/MAX11081 are designed to be the per-
fect complement to the MAX11068 high-voltage mea-
surement IC for redundant fault-monitoring applications.
This device is offered in a 9.7mm x 4.4mm, 38-pin
TSSOP package with 0.5mm pin spacing. The package
is lead-free and RoHS compliant with an extended
operating temperature range of -40°C to +105°C.
Applications
High-Voltage, Multicell-Series-Stacked Battery
Systems
Electric Vehicles
Hybrid Electric Vehicles
Electric Bikes
High-Power Battery Backup
Solar Cell Battery Backup
Super-Cap Battery Backup
Features
o Up to 12-Cell Li+ Battery Voltage Fault Detection
o Operation from 6.0V to 72V
o Pin-Selectable Overvoltage Threshold from +3.3V
to +4.8V in 100mV Increments
±25mV Overvoltage-Detection Accuracy
o Pin-Selectable Undervoltage Threshold from
+1.6V to +2.8V in 200mV Increments
±100mV Undervoltage-Detection Accuracy
o Overvoltage/Undervoltage-Threshold Detection
Hysteresis
MAX11080: 300mV
MAX11081: 37.5mV
o Programmable Delay Time of Alarm Detection
from 3.0ms to 3.32s with an External Capacitor
o Daisy-Chained Alarm and Shutdown Functions
with Heartbeat Status Signal
Up to 31 Devices Can Be Connected
o Ultra-Low-Power Dissipation
Operating-Mode Current Drain: 80µA
Shutdown-Mode Current: 2µA
o Wide Operating Temperature Range from -40°C to
+105°C (AEC-Q100, Type 2)
o 9.7mm x 4.4mm, 38-Pin TSSOP Package
o Lead(Pb)-Free and RoHS Compliant
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX11080GUU/V+ -40°C to +105°C 38 TSSOP
MAX11081GUU/V+ -40°C to +105°C 38 TSSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11080 Datasheet

High-Voltage Battery-Pack Fault Monitor

No Preview Available !

12-Channel, High-Voltage
Battery-Pack Fault Monitors
ABSOLUTE MAXIMUM RATINGS
HV, VDDU, GNDU, DCIN to AGND.........................-0.3V to +80V
HV to DCIN and C12 ................................................-0.3V to +6V
Cn+1 to Cn, where n = 1 to 11...............................-0.3V to +80V
C1 to C0 ...................................................-0.3V to +20V (Note 1)
C1 to AGND ..............................-0.3V to (VDCIN + 0.6V) (Note 2)
C0 to AGND...........................................................-0.3V to +0.9V
C2–C12 to AGND ....................................-0.3V to (VDCIN + 0.6V)
SHDN, VAA to AGND ................................................-0.3V to +4V
VDDU to GNDU.........................................................-0.3V to +6V
OVSEL_, UVSEL_, TOPSEL to AGND .........-0.3V to (VAA + 0.3V)
CD, ALRML to AGND..................................-0.3V to (VAA + 0.3V)
ALRMU to GNDU ...................................-0.3V to (+VDDU + 0.3V)
CP+ to AGND ...........................(GNDU - 0.3V) to (VDDU + 0.3V)
CP- to AGND...........................................-0.3V to (GNDU + 0.3V)
CP- to VDDU .......................................................................+0.3V
ESD Rating
C_, REF, VAA, VDDU, GNDU,
DCIN, SHDN, CP+, CP-, HV,
OVSEL_, UVSEL_, TOPSEL,
ALRMU, ALRML,
AGND, CD ..............................±2kV (Human Body Model, Note 3)
Continuous Power Dissipation (TA = +70°C)
38-Pin TSSOP (derate 15.9mW/°C above +70°C) ....1095.9mW
Operating Temperature Range .........................-40°C to +105°C
Storage Temperature Range .............................-55°C to +150°C
Junction Temperature (continuous) .................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Note 1: The C1 to C0 differential input path is tolerant to 80V as long as the SHDN pin is deasserted.
Note 2: The C1 input is tolerant to a maximum VDCIN + 0.6V with SHDN = 1. If SHDN = 0, 20V is the maximum rating.
Note 3: Human Body Model to Specification MIL-STD-883 Method 3015.7.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(TA = TMIN to TMAX, unless otherwise noted. VDCIN = VGNDU = +6.0V to +72V, typical values are at TA = +25°C, unless otherwise
specified from -40°C to +105°C.)
PARAMETER
C_ INPUTS
Differential Input Range
Input Current
Overvoltage Threshold
Overvoltage-Threshold Accuracy
Undervoltage Threshold
Undervoltage-Threshold
Accuracy
Comparator Hysteresis (Note 4)
CD PIN
CD Current
CD Trip Voltage
Delay-Time Accuracy
STATUS/CONTROL PORT
Shutdown Disable (SHDN High
Voltage)
Shutdown Asserted (SHDN Low
Voltage)
SYMBOL
CONDITIONS
VCELLXIN
ICXIN
VOV
Any two inputs Cn to Cn+1,
where n = 1 to 11 (Note 4)
C1 to C0 with SHDN = 1
C1 to C0 with SHDN = 0
VCELL = 3.0V
VUV
VHYS
ICD
VCD
MAX11080
MAX11081
VCD = 0.4V
Internal at comparator
Excluding CDLY variation
SHDN/VIH
SHDN/VIL
MIN TYP MAX UNITS
1.5
1.5
1.5
-1
+3.3
+1.6
12
0.05
±5
±20
300
37.5
72
72
16
+1
+4.8
±25
+2.8
±100
77
4.35 6.1 7.65
1.23
±20
V
µA
V
mV
V
mV
mV
µA
V
%
2.1 V
0.6 V
2 _______________________________________________________________________________________


Part Number MAX11080
Description High-Voltage Battery-Pack Fault Monitor
Maker Maxim Integrated Products
Total Page 29 Pages
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