CAT2300
http://onsemi.com
2
VREG
GND
Sense
KS
Kelvin
Gate
EN
250 mA
1
0
Figure 2. Simplified Block Diagram
I
MEAS
+

V
DD
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
Function
1
Sense
 Connects to Sense pin of SENSEFET and directs sensed current to IMEAS output.
2
KS
 Kelvin Sense; a Kelvin connection for the current mirror control amplifier. This connection must be made
 directly to Sense on the SENSEFET package. Do not share any trace length with CAT2300s Sense lead.
3
Kelvin
 Connects to Kelvin pin of the SENSEFET. Serves as the reference point for Sense lead biasing.
4
Gate
 Connects to Gate of the SENSEFET and controls SENSEFET operation.
5
GND
 Electrical ground for IC.
6
V
DD
 External voltage supply for driving the gate of the SENSEFET and power supply for CAT2300 internal
 circuitry via an internal voltage regulator.
7
EN
 Enable: High true logic input. Turns ON SENSEFET and CAT2300s internal circuitry. A logic LOW on EN
 grounds Gate, shutting off the SENSEFET and shuts down the internal current source and mirroring circuitry.
8
I
MEAS
 Sensed current output. A resistor between I
MEAS
 and ground develops a voltage proportional to the
 current flowing through the SENSEFET.
PAD
 Backside paddle is internally connected to GND. This pad may be left floating but if connected with PCB it
 must be to the ground plane of circuitry which is also grounded.
Table 2. ABSOLUTE MAXIMUM RATINGS (Note 1)
Parameter
Symbol
Value
Unit
 V
DD
V
DD
6.5
V
 Gate
?5
mA
 V
K
, EN, Sense, KS, Kelvin, I
MEAS
6.5
V
 Junction Temperature
150
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1.  Guaranteed by design.
Table 3. RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Value
Unit
 V
K
V
K
0.9 to 1.5
V
 V
DD
V
DD
5
V
 Maximum Junction Temperature
T
JUNCTION
125
 Ambient Temperature Range
T
AMBIENT
40 to +85
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