CQ2 Series

Low heat generation
Creepage / Clearance distance ≧ 13.3mm
High resolution
Cored current sensor

Current Sensor ICs

Overview

The CQ2 series is a series of cored current sensors. It features a simple structure (AI-Shell®) that combines a highly sensitive compound Hall element, a magnetic core, and primary conductor.
It has an extremely low primary conductor resistance (100μΩ), making it suitable for products in which heat must be minimized.
In addition, the CQ2 series has a wide creepage and clearance distance of 13.3 mm, allowing it to be used at high operating voltages.

Within the CQ2 series, the CQ2366 has very different features than other models. Please see this link.

This page contains information about the features of the CQ2 series, product details, datasheets, and product lineup information. It also provides technical information such as safety standard information and gerber data of evaluation board, etc.

Features

CQ2 Series

1. Low heat generation

The CQ2 series has a primary conductor resistance of 100μΩ (25°C) due to its unique AI-Shell package structure. Since the amount of heat generation is proportional to the resistance value, this enables it to minimize increases in temperature even when a large current is passed through it.

2. Clearance, Creepage distance

The CQ2 series has a unique package structure called AI-Shell, with creepage and spatial distances of 13.3 mm or more. It is made with Gr=3 material, so the operating voltage is as follows in pollution degree 2 environments.
Basic insulation=1330Vrms Reinforced insulation=650Vrms

3. Ultra-high accuracy

In package structures, there is usually a tradeoff between low primary conductor resistance/large creepage and spatial distances and resolution.This is because the magnetic fields that collect in the Hall element tend to be small.However, the CQ2 series uses InAs Hall elements with highly sensitive quantum well structures. This enables them to have low heat generation and a creepage/clearance distance of 13.3mm while also offering high resolution.

Applications

  • Air conditioner, etc.

Specifications

Series
 
  CQ2 Series CQ2366
Current sensor type   Cored Current Sensor :
AI-Shell
Cored Current Sensor :
AI-Shell
Package size [mm] 22.8 x 14.4 x 9.2 18.8 x 14.4 x 8.4
Package Type (Mounting style)   Through hole type Through hole type
Power Supply Voltage [V] CQ223x : 3.3
(2.7 to 3.63)
CQ233x : 5.0
(4.5 to 5.5)
5.0
(4.5 to 5.5)
Operating Temperature [℃] -40 to 110 -40 to 110
Maximum Primary
Current
[Arms] 50 50
Working Voltage 
(pollution degree=2)
[Vrms] 1330
(basic insulation)
270
(basic insulation)
Creepage / Clearance
Distance (min.)
[mm] 13.3 2.7
Primary conductor
resistance (Typ.)
[μΩ] 100 100
Isolation Voltage [kVrms] 3
(AC50/60Hz, 60s)
2.5 
(AC50/60Hz, 60s)
VREF Pin   Non-existence Non-existence
Disturbance magnetic field
fluctuation suppression  function
  Existence
(Suppression  function 
by magnetic core)
Existence
(Suppression  function 
by magnetic core)
Overcurrent
detection function
  Non-existence Non-existence
Ratiometric /
Non-Ratiometric
  Ratiometric Ratiometric
Safety Standards   IEC/UL62368-1 certified
UL508 certified
IEC/UL62368-1 certified
UL508 certified
Pb Free   Yes Yes
Halogen Free   Yes Yes
MSL   MSL1 MSL1
JEDEC Standard Packaging   Compliant Compliant
Packaging      
Minimum Order Quantity [pcs.] 1000 1000
Part Status
 
  Preview Preview
CQ2 Series Block Diagram

CQ2366

The CQ2366 has very different features among the CQ2 series, please see this link.

Lineup


CQ2 Series 
You can download a datasheet (PDF file) below.

Product 
Name
Power
Supply
Voltage
Linear 
Sensing 
Range
Sensitivity

Temperature 
Drift of 
Sensitivity
*1
Temperature 
Drift of 
Offset 
Voltage *2
Output
Noise 
*3
Bandwidth Response
Time
Datasheet 
Download
(PDF)
[V] [A] [mV/A] [%] [mV] [mVrms] [kHz] [μs]
CQ2232 3.3 ±21 62.5 ±0.4 ±9.0 1.2 300 1 CQ2232 DS
CQ2233 ±35 37.5 ±5.5 CQ2233 DS
CQ2234 ±54 24.5 ±3.5 CQ2234 DS
CQ2235 ±85 15.5 ±2.5 CQ2235 DS
CQ2332 5.0 ±21 100 ±0.5 ±23 CQ2332 DS
CQ2333 ±35 60.0 ±12 CQ2333 DS
CQ2334 ±54 40.0 ±8 CQ2334 DS
CQ2335 ±85 25.0 ±6 CQ2335 DS
CQ2366 5.0 ±170 12.0   ±4 0.5 180 1.5 CQ2366 DS

[Notes]

*1 Change ratio of Sensitivity (Ta=35°C) . Temperature range -40~110°C
*2 Change ratio of Zero-Current Output Voltage(Ta=35°C) . Temperature range -40~110°C
*3 Output noise voltage 100Hz to 4MHz integrated

The CQ2366 has very different features among the CQ2 series, please see this link.

Design Support

Technical Resources

You can download documents and data necessary for design. Please make use of them when designing.

Certified with safety standards

The CQ2 series has UL-60950, IEC60950, and UL-508 certifications. You can download a detailed PDF file below.

Find other products

Search by Selection Table

You can select a product from the product specifications.
Click on the product series name to see the details.

Current 
Sensor 
Type
Package Supply
Voltage
Output
Voltage
Effective
Current
Measurement
Range
Bipolar /
Unipolar
Ratiometric/
Non-Ratiometric
Creepage
Clearance
Working
Voltage *
Product 
Name
Product
Series
(V) (V) (Arms) (Apeak) (mm) (Vrms)
Coreless SOP 5.0 5.0 60 ± 5.3 to ± 180
Bipolar Retiometric ≧ 8.0 1118 CZ370x CZ37 Series
0 to 345.2 Unipolar CZ372x 
3.0 50 ± 11.6 to ± 166.6 Bipolar Non-Ratiometric CZ3AGx CZ3A Series
3.3 3.3 ± 12.9 to ± 129.1 CZ3A0x
5.0 5.0 20 ± 4.5 to ± 42 Bipolar
Retiometric ≧ 5.0 1000 CQ330x CQ3 Series
± 20.5 to 42 Unipolar
3.3 3.3 ± 8.5 to ± 44 Bipolar CQ320x
20.9 Unipolar
Through
Hole 
DIP 5.0 5.0 50 ± 21 to ± 170 Bipolar ≧ 13.3 1330 CQ233x CQ2 Series
3.3 3.3 ± 21 to ± 85 CQ223x
5.0 5.0 ± 170 ≧ 2.7 270 CQ2366
 

* Pollution Degree II with reinforced insulation