ZXCT1021_06 Datasheet, PDF (1/8 Pages) Zetex Semiconductors – Low offset high-side current monitor

ZXCT1021
Low offset high-side current monitor
Description
The ZXCT1021 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 ZXCT1021 provides a fixed gain of 10 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
• Accurate high-side current sensing
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
• Battery chargers
• Output voltage scaling
• Smart battery packs
• 2.5V – 20V supply range
• DC motor control
• 25mA quiescent current
• Over current monitor
• 1% typical accuracy
• Power management
• SOT23-5 package
• Level translating
• Programmable current source
Pinout information
Typical application circuit
NC
V_SENSE-
GND
V_OUT
V_SENSE+
Pinout - top view
Ordering information
Order reference
Package
ZXCT1021E5TA
SOT23-5
Device
marking
1021
Status
Released
Reel size
(inches)
7
Quantity
per reel
3000
Tape width
(mm)
8
Issue 7 - June 2006
1
© Zetex Semiconductors plc 2006
www.zetex.com