ZXCT1051 Datasheet, PDF (1/10 Pages) Zetex Semiconductors – Precision wide input range current monitor

ZXCT1051
Precision wide input range current monitor
Description
The ZXCT1051 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 ZXCT1051 can be used on the high or low
side of the load.
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.
The ZXCT1051 provides a fixed gain of 10
thereby removing the need for an additional
resistor.
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
• 50 µA quiescent current
• 1% typical accuracy
• 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
V_SENSE+
R_SENSE
V_SENSE-
V_CC
GND
V_OUT
V_SENSE-
V_SENSE+
V_SENSE+ V_SENSE-
V_CC
ZXCT1051
GND
V_OUT
Ordering information
Order code
Package
ZXCT1051E5TA
SOT23-5
Partmark
1051
V_OUT
Reel size
(inches)
7
Tape width
(mm)
8
Quantity
per reel
3,000
Issue 2 - November 2006
1
© Zetex Semiconductors plc 2006
www.zetex.com