The ATK-I 5/20/30 current sensor provides precise and economical current sensing for applications including motor control, load detection, power supplies, and fault protection. It operates from 4.5-5V and detects current ranges of 5A, 20A, or 30A depending on the model. It has a compact design, analog output, and simple 3-pin interface. Typical uses include consumer electronics, motor control, power management, and overcurrent protection.

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ATK-I 5/20/30 Current Sensor Overview
The ATK-I 5/20/30 provides economical and precise solutions for AC or DC current sensing in industrial, automotive, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switched-mode power supplies, and over-current fault protection. Features
 Operating Voltage: 4.5V to 5V
 Current detecting range 5A/20A/30A depend upon Module No.
 Onboard visual indicator (LED).
 Compaq design and easily mount.
 Simple 3 PIN header interface.
 Analog output.
 Sensitive to magnetic field.
Applications
 Consumer electronics
 Motor control
 Load detection and management
 Switched-mode power supplies
 Over-current fault protection

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Specifications Parameter Min Typ Max Units
Working Voltage
4.5
5
8
Volts
Range
5/20/30
Amp
Part No Range Sensitivity ATK-I 05 ±5Amp 185mV/A ATK-I 20 ±20Amp 100mV/A ATK-I 30 ±30Amp 66mV/A
Pin Diagram
Pin Pin Name Pin Name
+5V
Power Supply
Regulated 5V supply input
GND
Ground
Ground level of power supply
OUT
Output
Output for external devices
1(Green connector)
Input supply line
1
2(Green connector
To the device to be measure
2
(VIOUT(Q)). The output of the sensor when the primary current is zero. For a unipolar supply voltage, it nominally remains at VCC ⁄ 2. Thus, VCC = 5 V translates into VIOUT(Q) = 2.5 V. Variation in VIOUT(Q) can be attributed to the resolution of the Allegro linear IC quiescent voltage trim and thermal drift. For No current output value is 2.5V

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Note: Always connect the measuring device to the green connector. The green connector should be in series with supply line.