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PDF ZXCT1023 Data sheet ( Hoja de datos )
| Número de pieza | ZXCT1023 | |
| Descripción | High-side Current Sense Monitor | |
| Fabricantes | Zetex Semiconductors | |
| Logotipo |  |
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www.DataSheet4U.com
A Product Line of
Diodes Incorporated
ZXCT1023
MICROPOWER FIXED GAIN OF 50 CURRENT MONITOR
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.
Pin Connections
TDFN1218-4L
OUT 1
4 S+
GND 2
3 S-
Top View
Features
• Accurate high-side current sensing
• Fixed gain of 50 output scaling
• 2.5V – 20V operating range
• 3.5µA quiescent current
• TDFN1218 package
Typical Operating Circuit
S+
RGT
RS S-
Applications
• Battery capacity measurement
• Battery chargers
• Over-current monitor
VOUT
RG
GND
Ordering Information
Order Reference Package
ZXCT1023DFGTA TDFN1218
Device
Marking
1023
Status
Active
Reel Size
(inches)
7
Quantity
per Reel
3000
Tape Width
(mm)
8
ZXCT1023
Document Rev. 1
1 of 6
www.diodes.com
MARCH 2009
©Diodes Incorporated
1 page  
www.DataSheet4U.com
A Product Line of
Diodes Incorporated
ZXCT1023
MICROPOWER FIXED GAIN OF 50 CURRENT MONITOR
Application information
The ZXCT1023 is line powered (derives its power from the rail being sensed) this reduces the number of
pins used and PCB trace routing. The fixed gain of 50 reduces the PCB area by reducing the number of
external components. The only external component required is the sense resistor. This coupled with the
1.2mm x 1.8mm TDFN package makes the solution size very small.
The fixed gain of 50 has been chosen to meet the normal requirements of most applications.
S+ S-
RS
RGT
VOUT
RG
GND
The ZXCT1023 has its gain setting resistor, RG, set at 15kΩ which further reduces power consumption at
larger VSENSE.
Application Examples
Please refer to Zetex AN39 for sample applications.
Package Outline
TDFN1812-4 package
ZXCT1023
Document Rev. 1
5 of 6
www.diodes.com
MARCH 2009
©Diodes Incorporated
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet ZXCT1023.PDF ] | |
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