ZXCT1041 Datasheet, PDF (1/8 Pages) Zetex Semiconductors – Bidirectional precision high-side current monitor

ZXCT1041
Bidirectional precision high-side current monitor
Description
The ZXCT1041 is a bidirectional precision high-
side current sense monitor. The output voltage
is proportional to the differential input voltage.
Direction of current flow is indicated by the
Flag pin.
The ZXCT1041 provides a fixed gain of 10 for
applications where minimal sense voltage is
required.
The very low offset voltage enables a typical
accuracy of 2% for sense voltages of only
10mV, giving better tolerances for small sense
resistors necessary at higher currents.
The wide input voltage range of 18V down to
as low as 2.7V make it suitable for a range of
applications.
A minimum operating current of just 40␮A,
combined with a SOT23-5 package makes this
part suitable for portable battery equipment.
Features
• Bidirectional high side measurement
• Output voltage scaling x10
• 2.7V to 20V high side voltage
• 35µA quiescent current
• 1% typical accuracy
• SOT23-5 package
Applications
• Battery management
• Over current monitor
• Battery gas gauging
• Motor control
Typical application circuit
Pin connections
V_IN+
R_SENSE
V_IN-
Flag
GND
V_OUT
V_SENSE-
V_SENSE+
4
5
V_SENSE+ V_SENSE-
ZXCT1041
1
GND
2
V_OUT
3
Flag
V_OUT
Ordering information
Order code
Package
ZXCT1041E5TA
SOT23-5
Partmark
1041
Reel size
(inches)
7
Tape width
(mm)
8
Quantity
per reel
3000
Issue 1 - November 2006
1
© Zetex Semiconductors plc 2006
www.zetex.com