Diodes ZXCT1080 User Manual
Zxct1080, High voltage high-side current monitor, Description
ZXCT1080
HIGH VOLTAGE HIGH-SIDE CURRENT MONITOR
ZXCT1080
Document number: DS33454 Rev. 4 - 2
1 of 11
December 2011
© Diodes Incorporated
Description
The ZXCT1080 is a high side current sense monitor with a
gain of 10 and a voltage output. Using this device eliminates
the need to disrupt the ground plane when sensing a load
current.
The wide input voltage range of 60V down to as low as 3V
make it suitable for a range of applications; including systems
operating from industrial 24 to 28V rails and 48V rails.
The separate supply pin (V
CC
) allows the device to continue
functioning under short circuit conditions, giving an end stop
voltage at the output.
The ZXCT1080 has an extended ambient operating
temperature range of -40°C to 125°C enabling it to be used in
a wide range of applications including automotive.
Features
•
3V to 60V continuous high side voltage
•
Accurate high-side current sensing
•
-40 to 125°C temperature range
•
AEC-Q100 Grade 1 qualified
•
Output voltage scaling x10
•
4.5V to 12V V
CC
range
• Low
quiescent
current:
o
80
μA supply pin
o
27
μA I
S+
• SOT25
package
Pin Assignments
Applications
•
Industrial applications current measurement
• Battery
management
• Over-current
measurement
• Power
management
•
Automotive current measurement
Typical Application Circuit
1
2
3
5
7
4
S-
S+
OUT
GND
V
CC
1
4
5
3
2
R
SENSE
ZXCT1080
V
CC
V
OUT
V
IN
GND
OUT
S+
S-