ZXCT1050 Datasheet, PDF (1/10 Pages) Zetex Semiconductors – Precision wide input range current monitor

ZXCT1050
Precision wide input range current monitor
Description
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.
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
Pin connections
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.
Applications
• Power supply
• DC motor and solenoid control
• Battery management
• Over current monitor
• Power management
• Short circuit detection
Typical application circuit
V_CC 1
GND ²
OUT 3
5 SENSE-
4 _SENSE+
IN
R_SENSE
R_SHUNT
SENSE+
SENSE-
V_CC
ZXCT1050
OUT
Load
OUT
R_GAIN
Ordering information
Order code
Pack
ZXCT1050E5TA
SOT23-5
Issue 1 - June 2007
© Zetex Semiconductors plc 2007
Part mark
1050
Reel size
(inches)
7
Tape width
(mm)
8
Quantity
per reel
3000
1
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