Diodes ZXCT1050 - Manual

Issue 1 - June 2007 1 www.zetex.com
© Zetex Semiconductors plc 2007
ZXCT1050
Precision wide input range current monitor
Description
Ordering information
The ZXCT1050 is a wide input range current
monitor, which operates over a range of input
voltages from ground up to V
CC
-2V. As a
result the ZXCT1050 can be used on the high
or low side of the load.
The ZXCT1050 provides variable gain by
using two external resistors. The first of
which sets the transconductance and the
second setting the overall gain.
The very low offset voltage enables a typical
accuracy of 1% for sense voltages of only 30mV,
giving better tolerances for small sense
resistors necessary at higher currents.
Features
• Accurate down to end current sensing
• Output voltage scaling x10
• 0 to V
CC
-2V sense input range
• 2.7 to 20V supply range
• 50µA quiescent current
• SOT23-5 package
Applications
• Power supply
• DC motor and solenoid control
• Battery management
• Over current monitor
• Power management
• Short circuit detection
Pin connections Typical application circuit
Order code Pack Part mark Reel size
(inches)
Tape width
(mm)
Quantity
per reel
ZXCT1050E5TA SOT23-5 1050 7 8 3000
SENSE-
SENSE+
V
CC
GND
OUT
1
2
3
5
4
OUT
V
CC
OUT
SENSE+ SENSE-
Load
R
SHUNT
R
GAIN
R
SENSE
ZXCT1050
IN