ZXCT1081_0704 Datasheet, PDF (1/12 Pages) Zetex Semiconductors – High voltage high-side current monitor

ZXCT1081
High voltage high-side current monitor
Description
The ZXCT1081 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 40V down to
as low as 3V make it suitable for a range of
applications; including systems operating
from industrial 24-28V rails and power
supplies.
Features
• 3V to 40V continuous high side voltage
• Accurate high-side current sensing
• Output voltage scaling x10
• 4.5V to 12V V_CC range
• Low quiescent current:
• 80µA supply pin
• 30µA I_SENSE+
• SOT23-5 package
• -40°C to 125°C ambient temperature range
Pin connections
The separate supply pin (V_CC) allows the device
to continue functioning under short circuit
conditions, giving an end stop voltage at the
output.
For automotive applications the ZXCT1081 has
a 60V transient capability and ambient
temperature range of -40°C to 125°C.
Applications
• Automotive current measurement
• Industrial applications current measurement
• Battery management
• Over current monitor
• Power management
• Power adapters
Typical application circuit
VIN
V_CC 1
5 _SENSE-
R SENSE
GND ²
OUT 3
4 _SENSE+
4
5
SENSE+
SENSE-
V_CC
1 _{Vcc ZXCT1081}
GND
2
OUT
3
V OUT
Ordering information
Device
Package
ZXCT1081E5TA SOT23-5
Issue 4 - April 2007
© Zetex Semiconductors plc 2007
Part mark
1081
Reel size
(inches)
7
1
Tape width
(mm)
8
Quantity per
reel
3000
www.zetex.com