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ZXCT1030X8TA

P1-P3P4-P6P7-P7
ZXCT1030
ZXCT1030
Document number: DS32161 Rev. 4 - 2
1 of 7
www.diodes.com
June 2010
© Diodes Incorporated
A
Product Line o
f
Diodes Incorporated
HIGH-SIDE CURRENT MONITOR WITH COMPARATOR
Description
The ZXCT1030 is a high side current sense monitor
containing an internal reference and comparator with a non-
latching output. Using this device eliminates the need to
disrupt the ground plane when sensing a load current.
The wide input voltage range of 20V down to as low as 2.2V
make it suitable for a range of applications. Dynamics and
supply current are optimized for the processing of fast pulses,
associated with switch mode applications
.
Pin Assignments
Features
• Low cost, accurate high-side current sensing
• Output voltage scaling
• Up to 18V output
• 2.2V - 20V supply range
• Voltage reference on chip
• Comparator on chip
• SO8 package
Applications
• Battery chargers
• Electronic fuse
• DC motor control
• Over current monitor
• Power management
• Inrush current limiting
Typical Application Circuit
V
CC
V
SENSE-
V
SENSE+
GND
V
COMP_OUT
V
OUT
Vref_out
V
COMP_IN
ZXCT1030
ZXCT1030
Document number: DS32161 Rev. 4 - 2
2 of 7
www.diodes.com
June 2010
© Diodes Incorporated
A
Product Line o
f
Diodes Incorporated
Pin Description
Pin Name Function
V
CC
Supply voltage
V
SENSE-
Negative sense input
V
SENSE+
Positive sense input
GND
Ground
V
COMP_IN
Comparator input, usually a ratio of the
reference or other control signal
V
REF_OUT
Reference output
V
OUT
Current monitor output voltage
V
COMP_OUT
Open collector comparator output
Absolute Maximum Ratings
Paramete
r
Rating Unit
Voltage on any pin
-0.6 and V
CC
+0.6
V
Operating Temperature -40 to 85 °C
Storage Temperature -55 to 125 °C
Package Power Dissipation
(T
AMB
= 25)
°C
SO8 700 mW
Recommended Operating Conditions
Parameter Min Max Units
V
CC
2.2 20 V
V
SENSE+
2.2
V
CC
V
V
SENSE
(a)
10 500 mV
V
OUT
0
V
SENSE-
-1V
V
V
COMP_IN
0.005 10 V
T
AMB
-40 85 °C
ZXCT1030
ZXCT1030
Document number: DS32161 Rev. 4 - 2
3 of 7
www.diodes.com
June 2010
© Diodes Incorporated
A
Product Line o
f
Diodes Incorporated
Electrical Characteristics (ZXCT1030N8) – Test conditions T
AMB
= 25°C, V
IN
= V
CC
= 15V, R
COMP
= 10kΩ,
V
COMP
_
SUPPLY
= 5V unless otherwise stated.
Symbol Paramete
r
Condition Min. Typ. Max. Unit
V
CC
V
CC
Range
2.2 20 V
V
SENSE
+
Sense+ Range 2.2
V
CC
V
OUT
Output Voltage
V
SENSE
= 0
V
SENSE
= 10
V
SENSE
= 30
V
SENSE
= 50
V
SENSE
= 100
V
SENSE
= 500
0
88
284
480
970
4500
2
100
300
500
1000
5000
10
112
316
520
1030
5500
mV
R
OUT
Output Resistance
V
SENSE -
= 15V,
V
OUT
= 1V
1.2 1.5 1.8 kΩ
V
OUT
T
C
V
OUT
Temperature Coefficient
30 ppm/°C
I
CC
Supply Current
V
SENSE -
= 15V
170 270 350 µA
I
SENSE
+
V
SENSE
+ Input Current
48 90 µA
I
SENSE
-
V
SENSE
- Input Current
V
SENSE-
= 14.9V
70 220 nA
V
CM(MIN)
(B)
Minimum Active Common Mode Voltage
V
CC
= 15V
V
COMP
_
SUPPLY
=
5V
V
COMP
_
IN
= V
REF
V
SENSE
= 10mV
2.8 V
A
CC
ccuracy
V
SENSE
= 100mV
-3 3 %
GAIN
V
OUT
/V
SENSE
V
SENSE
= 100mV
9.7 10.0 10.3
BW Bandwidth
V
SENSE
= 10mVp-p
V
SENSE
= 100mVp-p
3
6
MHz
COMPARATOR
V
COMP
_
IN
Input Voltage 0.005 10 V
V
H
Hysteresis 15 mV
I
B
Input Bias 5 80 150 nA
T
D
Propagation Delay 100 ns
V
OL
Output Voltage Lo
w
30 150 200 mV
V
OH
Output Voltage High
V
COMP_
SUPPL
Y
I
OL
Output Sink Current
V
ol = 0.4V 2 mA
I
OH
Output High Leakage Current 1.0 µA
V
oltage Reference
V
REF
Reference Current =
+300µA to -5µA
1.200 1.240 1.280 V
Delta V
REF
Change in V
REF
I
SOURCE
5µA to
I
SINK
300µA
10 mV
T
C
30 ppm/°C
PSR Supply Rejection 0.01 %/V
Notes: (a) (V
SENSE+
) – (V
SENSE
-)
(b) Level of V
SENSE
+ where comparator output defaults to ‘off’.
P1-P3P4-P6P7-P7

ZXCT1030X8TA

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Description:
IC MONITOR CURRENT HI SIDE 8MSOP
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