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ZXCT1109SA-7 Datasheet

LOW POWER HIGH-SIDE CURRENT MONITORS

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A Product Line of
Diodes Incorporated
ZXCT1107/1109/1110
LOW POWER HIGH-SIDE CURRENT MONITORS
Description
The ZXCT1107/09/10 are high side unipolar current sense
monitors. These devices eliminate the need to disrupt the
ground plane when sensing a load current.
The wide common-mode input voltage range and low
quiescent current coupled with SOT23 packages make
them suitable for a range of applications; including
adapters, automotive and systems operating from industrial
24V rails.
The device is line powered and as such doesn’t need a
separate supply rail.
Quiescent current is only 3µA thereby minimising current
sensing error. One external gain setting resistor increases
versatility by permitting wide gain ranges.
Features
Wide supply and common-mode voltage range:
2.5V to 36V
SOT23 packages
o 3-pin ZXCT1107/09
o 5-pin ZXCT1110
Low quiescent current (3µA).
Extended industrial temperature range -40 to 125°C
AEC-Q100 Grade1 Automotive qualified variants
Applications
Automotive current measurement
Industrial applications current measurement
Battery management
Over current monitor
Power Management
Typical Application Circuit
Pin Assignments
ZXCT1107
Top View
2 S-
OUT 1
3 S+
ZXCT1109
Top View
2 S+
OUT 1
3 S-
ZXCT1110
Top View
NC 1
5 S-
GND 2
OUT 3
4 S+
ZXCT1107/1109/1110
Document number: DS35033 Rev. 3 - 2
1 of 16
www.diodes.com
JULY 2011
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

ZXCT1109SA-7 Datasheet

LOW POWER HIGH-SIDE CURRENT MONITORS

No Preview Available !

A Product Line of
Diodes Incorporated
ZXCT1107/1109/1110
LOW POWER HIGH-SIDE CURRENT MONITORS
Pin Descriptions
Package
Name
OUT
S+
S-
GND
NC
SOT23
ZXCT1107 ZXCT1109
11
11
3
2
2
3
-
-
-
-
SOT25
ZXCT1110
3
4
5
2
1
Description
Output pin. Current output.
This is the positive input of the current monitor and has a wide
common-mode input range. This also acts as the analog supply and
provides power to internal circuitry. The current through this pin
varies with differential sense voltage.
This is the negative input of the current monitor and has a wide
common-mode input range.
Ground pin and substrate connection.
No connection
Notes.
1. For the ZXCT1107 and ZXCT1109 pin 1 (OUT) acts as both the output pin and substrate connection. This means that for the
ZXCT1107 and ZXCT1109 the minimum rail voltage that can be used is 2.5V + VOUT (see applications section for more details).
Absolute Maximum Ratings
Description
Rating
Unit
Voltage on S- and S+ relative to OUT (ZXCT1107/9)
-0.3 to 40
V
Voltage on S- and S+ relative to GND (ZXCT1110)
-0.3 to 40
V
Voltage on OUT to GND (ZXCT1110)
Differential Sense Voltage, VSENSE2,3
Current into S+ and S-3
-0.3 to VS+
V
-0.3 to 0.8
V
±8.5
mA
Storage Temperature
-55 to 150
°C
Maximum Junction Temperature
150
°C
Package Power Dissipation (TA = 25°C)
SOT23
300 (De-rate to Zero at 150°C)
mW
SOT25
300 (De-rate to Zero at 150°C)
ESD Ratings
Human Body Model
1000
V
Machine Model
150
V
Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings,
for extended periods, may reduce device reliability.
Notes:
2. VSENSE = VS+ - VS-
3. The differential input voltage limit, VS+ - VS-, may be exceeded provided that the input current limit into S+ or S- is not exceeded.
ZXCT1107/1109/1110
Document number: DS35033 Rev. 3 - 2
2 of 16
www.diodes.com
JULY 2011
© Diodes Incorporated


Part Number ZXCT1109SA-7
Description LOW POWER HIGH-SIDE CURRENT MONITORS
Maker Diodes
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