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
