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ZXCT1008  
Document number: DS33441 Rev. 6 - 2 
1 of 8
www.diodes.com
January 2014
?Diodes Incorporated 
ZXCT1008
 Product Line of
Diodes Incorporated
 
HIGH-SIDE CURRENT MONITOR
 
Description 
The ZXCT1008 is a high side current sense monitor. Using this
device eliminates the need to disrupt the ground plane when
sensing a load current.
It takes a high side voltage developed across a current shunt
resistor and translates it into a proportional output current. A user
defined output resistor scales the output current into a ground-
referenced voltage.
The wide input voltage range of 20V down to as low as 2.5V make
it suitable for a range of applications. The ability to withstand high
voltage transients and reverse polarity connection makes this part
very suitable for automotive and other transient rich environment.
 
 
 
 
Features 
?    Low cost, accurate high-side current sensing
?    -40 to +125 temperature range
?    Up to 500mV sense voltage
?    2.5V to 20V supply range
?    4糀 quiescent current
?    1% typical accuracy
?    SOT23
?    Totally Lead-Free & Fully RoHS Compliant  (Notes 1 & 2) 
?    Halogen and Antimony Free. Green Device (Note 3) 
?    Qualified to AEC-Q100 Standards for High Reliability 
 
 
 
 
Applications 
?    Automotive current measurement
?    DC motor and solenoid control
?    Over current monitor
?    Power management
Pin Assignments 
SOT23
Package Suffix - F
 
 
 
 
 
 
 
 
 
 
 
Application Circuit 
 
ZXCT1008
VSENSE+
VSENSE-
IOUT
RSENSE
Rlim
R
Vin
To load
Vout
 
 
 
 
 
Notes:
 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporateds definitions of Halogen- and Antimony-free,
"Green" and lead-free.
3. Halogen- and Antimony-free "Green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
 
 
 
 
I
OUT
V
SENSE+
3
V
SENSE-
(Top View)
2
1
I
OUT
V
SENSE+
3
V
SENSE-
(Top View)
2
1
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