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ZXCT1023
MICROPOWER FIXED GAIN OF 50 CURRENT MONITOR
 
ZXCT1023 
Document number: DS31997 Rev. 3 - 2 
1 of 8
www.diodes.com
June 2011
?Diodes Incorporated 
Description 
The ZXCT1023 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 ZXCT1023 has a fixed internal gain of 50 and the only
external component required is the external current sense
resistor; this combined with its 1.2mm x 1.8mm TDFN
package more than quarters the solution size of the
ZXCT1010.
The wide input voltage range of 20V down to as low as
2.5V makes it suitable for a range of applications.
The combination of operation down to 2.5V and just 3.5礎
quiescent    current    makes    it    ideal    for    single    cell
Li-Ion/polymer   battery   charge/discharge   measurement
applications.
 
Features 
"     Accurate high-side current sensing
"     Fixed gain of 50 output scaling
"     2.5V  20V operating range
"     3.5礎 quiescent current
"     TDFN1218 package
 
 
 
 
 
 
Pin Assignments 
 
3
1
4
2
S-
OUT
GND
S+
TDFN1218-4L
Top View
 
 
 
 
 
 
 
 
 
 
 
Applications 
"     Battery capacity measurement
"     Battery chargers
"     Over-current monitor
 
 
 
 
Typical Application Circuit 
 

+
GND
S-
R
S
R
GT
S+
V
OUT
R
G
 
 
 
 
 
 
 
 
 
 
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