ZXCT1012ET5TA Diodes Zetex, ZXCT1012ET5TA Datasheet - Page 6
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ZXCT1012ET5TA
Manufacturer Part Number
ZXCT1012ET5TA
Description
IC CURRENT MONITOR 2.5% TSOT23-5
Manufacturer
Diodes Zetex
Datasheet
1.ZXCT1012ET5TA.pdf
(10 pages)
Specifications of ZXCT1012ET5TA
Function
Current Monitor
Sensing Method
High-Side
Accuracy
±2.5%
Voltage - Input
2.5 ~ 20 V
Current - Output
2mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-5, TSOT-5, TSOP-5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ZXCT1012ET5TR
The following lines describe how to scale a load current to an output voltage.
V
I
V
Design example
In the circuit below a 1A current is to be represented by a 100mV output voltage (V
A) To be within recommended values choose the value of R
50mV > V
For example set V
From equation (1)
B) Now choose R
V
From equation (2)
Rearranging equation (3) for R
Typical circuit application
Where R
requires monitoring, Rsense can be selected on specific requirements of accuracy, size and power
rating.
Issue 1 - December 2006
© Zetex Semiconductors plc 2006
OUT
SENSE
OUT
OUT
IN
= 0.1 / (0.1 x 0.01) = 100
R
I
R
OUT
SENSE
OUT
= 100mV, when V
SENSE+
LOAD
GND
ZXCT1012
SENSE
= V
= R
= 10mA/V x V
= I
OUT
SENSE
represents any load including DC motors, a charging battery or further circuitry that
OUT
SENSE
SENSE-
> 200mV at full load.
OUT
/I
SENSE
OUT
x R
OUT
OUT
* I
OUT
to give:
SENSE
LOAD
= 100mV at 1.0A.
SENSE
OUT
= 100mV.
= 0.1V/1.0A
= 10mA/V x 0.1
= 0.1/0.001
OUT
gives:
equation (1)
equation (2)
equation (3)
LOAD
6
= 0.1
= 1mA
= 100
SENSE
to give:
ZXCT1012
www.zetex.com
OUT
):