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Issue 3 - March 2008 1 www.zetex.com
© Zetex Semiconductors plc 2008
ZXCT1080
High voltage high-side current monitor
Description
Ordering information
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 24-28V 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
• Output voltage scaling x10
• 4.5V to 12V V
CC
range
• Low quiescent current:
• 80µA supply pin
• 27µA I
S+
• SOT23-5 package
Applications
• Industrial applications current measurement
• Battery management
• Over-current measurement
• Power management
• Automotive current measurement
Pin connections Typical application circuit
Device Package Part mark Reel size
(inches)
Tape width
(mm)
Quantity per
reel
ZXCT1080E5TA SOT23-5 1080 7 8 3000
S-
S+
V
CC
GND
OUT
1
2
3
5
4
S+
4
S
-
5
OUT
3
V
cc
1
GND
2
ZXCT1080
R
SENSE
IN
V
CC
V
V
OUT
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