A Product Line of
Diodes Incorporated
ZXCT1082Q/83Q/84Q/85Q/86Q/87Q
AUTOMOTIVE GRADE PRECISION HIGH VOLTAGE HIGH-SIDE CURRENT MONITORS
Description Pin Assignments
The ZXCT1082Q/83Q/84Q/85Q/86Q/87Q are high side unipolar
current sense monitors. These devices eliminate the need to disrupt
OUT 1 V
5
CC
the ground plane when sensing a load current.
GND 2
The ZXCT1082Q/1084Q/1086Q have 60V maximum operating
voltages and ZXCT1083Q/1085Q/1087Q have 40V maximum
operating voltages.
S+34
S-
The wide common-mode input voltage range and low quiescent
currents coupled with SOT25 packages make them suitable for a
range of applications; including automotive and systems operating
Typical Application Circuits
from industrial 24-28V rails.
R
SENSE
Their quiescent current is only 0.6A thereby minimizing current
V V
SUPPLY LOAD
sensing error.
S+ S-
The ZXCT1082Q and ZXCT1083Q use three external
ZXCT1084/1085
transconductance/gain setting resistors which increase versatility by
permitting wide gain ranges and optimization of bandwidths. ZXCT1086/1087
V
CC
Load
The ZXCT1084Q/85Q/86Q/87Q are fixed gain voltage output
OUT
GND
counterparts of the ZXCT1082Q/83.
The ZXCT1082Q/3Q/4Q/5Q/6Q/7Q have been qualified to AEC-Q100
ZXCT1084Q/85Q: V = 25 x V
OUT SENSE
Grade 1 and are Automotive Grade supporting PPAPs.
ZXCT1086Q/87Q: V = 50 x V
OUT SENSE
Features
R
SENSE
Wide supply and common-mode voltage range
V V
SUPPLY LOAD
2.7V to 60V ZXCT1082Q/84Q/86Q
2.7V to 40V ZXCT1083Q/85Q/87Q
R
GT R
Independent supply and input common-mode voltage GT
S+
Low quiescent current (0.6A). S-
AEC-Q100 Grade 1 qualified
V
ZXCT1082/1083
Extended industrial temperate range -40 to +125C
CC
Load
SOT25 package in Green Molding
OUT
GND
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. Green Device (Note 3)
Automotive Grade
R
G
Qualified to AEC-Q100 Standards for High Reliability
PPAP Capable (Note 4)
R
G
ZXCT1082Q/83Q: V =V
OUT SENSE
R
GT
Applications
Automotive current measurement
Automotive battery management
Automotive over current monitor
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See A Product Line of
Diodes Incorporated
ZXCT1082Q/83Q/84Q/85Q/86Q/87Q
Pin Description
Function
PIN Name
Common ZXCT1082Q/83Q ZXCT1084Q/85Q/86Q/87Q
1 OUT Output pin. Current output. Voltage output
2 GND Ground pin.
This is the positive input of the current
An external resistor, R , should be
GT
Should be directly connected to the input
monitor. It has a wide common-mode
3 S+ connected from S+ to the input side
input range. The current through this pin side (V ) of the sense resistor.
SUPPLY
(V ) of the sense resistor
SUPPLY
varies with differential sense voltage.
This is the negative input of the current An external resistor, R , should be
GT
Should be directly connected to the load
4 S- monitor. It has a wide common-mode connected from S- to the load side
side (V ) of the sense resistor.
LOAD
input range.
(V ) of the sense resistor.
LOAD
5 This is the analogue supply and provides power to internal circuitry.
V
CC
Absolute Maximum Ratings
Rating Unit
Parameter
ZXCT1082Q/84Q/86Q ZXCT1083Q/85Q/87Q
Voltage on S- and S+ -0.3 to 65 -0.3 to 45 V
Voltage on V -0.3 to 65 -0.3 to 45 V
CC
Voltage on OUT -0.3 to V V
S-
Differential Input Voltage, V - V (Notes 5, and 6) 800 mV
S+ S-
Input current into S+ or S- (Notes 5, and 6) 12 mA
Storage Temperature -55 to +150 C
Maximum Junction Temperature +150 C
Package Power Dissipation (De-rate to zero at +150C) 300 at T = +25C mW
A
ESD Rating
HBM Human Body Model 3 kV
MM Machine Model 250 V
CDM Charged Device Model tbd kV
Caution: Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling
and transporting these devices.
Notes: 5. For the ZXCT1082/83 V = V V where V is the load voltage or the lower potential side of the sense resistor.
SENSE SUPPLY LOAD LOAD
For the ZXCT1083/84/85/86 V = V V
SENSE S+ S-
6. The differential input voltage limit, V - V may be exceeded provided that the input current limit into S+ or S- is not exceeded
S+ S-
Recommended Operating Conditions
Symbol Parameter Min Max Units
ZXCT1083Q/1085Q/1087Q Common-Mode Input Range 2.7 40
V
V
IN
ZXCT1082Q/1084Q/1086Q Common-Mode Input Range 2.7 60
ZXCT1083Q/1085Q/1087Q Supply Voltage Range 2.7 40
V
V
CC
ZXCT1082Q/1084Q/1086Q Supply Voltage Range 2.7 60
V Differential Sense Input Voltage Range 0 0.5 V
SENSE
Output Voltage Range (Note 5) 0 V
V V -1
OUT S-
Ambient Temperature Range -40 +125 C
T
A
2 of 13 April 2014
ZXCT1082Q/83Q/84Q/85Q/86Q/87Q
Diodes Incorporated
www.diodes.com
Document number: DS37015 Rev. 1 - 2