ZXCT1022_07 Datasheet, PDF (1/8 Pages) Zetex Semiconductors – Low offset high-side current monitor

ZXCT1022
Low offset high-side current monitor
Description
The ZXCT1022 is a precision high-side current
sense monitor. Using this type of device
eliminates the need to disrupt the ground
plane when sensing a load current.
The ZXCT1022 provides a fixed gain of 100 for
applications where minimal sense voltage is
required.
The very low offset voltage enables a typical
accuracy of 3% for sense voltages of only 10mV,
Features
giving better tolerances for small sense
resistors necessary at higher currents.
The wide input voltage range of 20V down to as
low as 2.5V make it suitable for a range of
applications. With a minimum operating
current of just 25µA, combined with its SOT23-
5 package make it suitable for portable battery
equipment too.
Applications
• Accurate high-side current sensing
• Output voltage scaling
• 2.5V – 20V supply range
• 25mA quiescent current
• 1% typical accuracy
• SOT23-5 package
Pinout information
• Battery chargers
• Smart battery packs
• DC motor control
• Over current monitor
• Power management
• Level translating
• Programmable current source
Typical application circuit
NC
V_SENSE-
GND
V_OUT
V_SENSE+
Pinout - top view
Ordering information
Order reference
Package
ZXCT1022E5TA
SOT23-5
Device
marking
1022
Status
Released
Reel size
(inches)
7
Quantity
per reel
3000
Tape width
(mm)
8
Issue 4 - January 2007
1
© Zetex Semiconductors plc 2007
www.zetex.com