ZXCT1107/1109/1110
LOW POWER HIGH-SIDE CURRENT MONITORS
ZXCT1107/1109/1110
Document number: DS35033 Rev. 3 - 2
2 of 16
www.diodes.com
JULY 2011
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NEW PRODUCT
Pin Descriptions
Package SOT23 SOT25
Description
Name ZXCT1107 ZXCT1109 ZXCT1110
OUT 1
1
1
1
3 Output pin. Current output.
S+ 3 2 4
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.
S- 2 3 5
This is the negative input of the current monitor and has a wide
common-mode input range.
GND - - 2 Ground pin and substrate connection.
NC - - 1 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 + V
OUT
(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)
-0.3 to V
S+
V
Differential Sense Voltage, V
SENSE
2,3
-0.3 to 0.8 V
Current into S+ and S-
3
±8.5 mA
Storage Temperature -55 to 150 °C
Maximum Junction Temperature 150 °C
Package Power Dissipation (T
A
= 25°C)
SOT23
SOT25
300 (De-rate to Zero at 150°C)
300 (De-rate to Zero at 150°C)
mW
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. V
SENSE
= V
S+
- V
S-
3. The differential input voltage limit, V
S+
- V
S-
, may be exceeded provided that the input current limit into S+ or S- is not exceeded.
