ZXCT1082Q/83Q/84Q/85Q/86Q/87Q
Document number: DS37015 Rev. 1 - 2
2 of 13
www.diodes.com
April 2014
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ZXCT1082Q/83Q/84Q/85Q/86Q/87Q
Pin Description
PIN Name
Function
Common ZXCT1082Q/83Q ZXCT1084Q/85Q/86Q/87Q
1 OUT Output pin. Current output. Voltage output
2 GND Ground pin.
3 S+
This is the positive input of the current
monitor. It has a wide common-mode
input range. The current through this pin
varies with differential sense voltage.
An external resistor, R
GT
, should be
connected from S+ to the input side
(V
SUPPLY
) of the sense resistor
Should be directly connected to the input
side (V
SUPPLY
) of the sense resistor.
4 S-
This is the negative input of the current
monitor. It has a wide common-mode
input range.
An external resistor, R
GT
, should be
connected from S- to the load side
(V
LOAD
) of the sense resistor.
Should be directly connected to the load
side (V
LOAD
) of the sense resistor.
5
V
CC
This is the analogue supply and provides power to internal circuitry.
Absolute Maximum Ratings
Parameter
Rating Unit
ZXCT1082Q/84Q/86Q ZXCT1083Q/85Q/87Q —
Voltage on S- and S+ -0.3 to 65 -0.3 to 45 V
Voltage on V
CC
-0.3 to 65 -0.3 to 45 V
Voltage on OUT
-0.3 to V
S-
V
Differential Input Voltage, V
S+
- V
S-
(Notes 5, and 6)
±800 mV
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 +150°C)
300 at T
A
= +25°C
mW
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
SENSE
= “V
SUPPLY
” – “V
LOAD
“ where V
LOAD
is the load voltage or the lower potential side of the sense resistor.
For the ZXCT1083/84/85/86 V
SENSE
= “V
S+
” – “V
S-
“
6. The differential input voltage limit, V
S+
- V
S-
may be exceeded provided that the input current limit into S+ or S- is not exceeded
Recommended Operating Conditions
Symbol Parameter Min Max Units
V
IN
ZXCT1083Q/1085Q/1087Q Common-Mode Input Range
ZXCT1082Q/1084Q/1086Q Common-Mode Input Range
2.7
2.7
40
60
V
V
CC
ZXCT1083Q/1085Q/1087Q Supply Voltage Range
ZXCT1082Q/1084Q/1086Q Supply Voltage Range
2.7
2.7
40
60
V
V
SENSE
Differential Sense Input Voltage Range 0 0.5 V
V
OUT
Output Voltage Range (Note 5) 0
V
S-
-1
V
T
A
Ambient Temperature Range -40 +125 °C
