Diodes ZXCT1023 - Manual

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 3.5µA
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
•
3.5µA 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
G T
S +
V
O UT
R
G