CQ3 Series

Fast response, Wide band
Small-sized, Insulated
Coreless Current Sensor ICs
with wide product lineup

"Currentier" Current Sensor ICs

Current Sensors

Overview

The CQ3 series is a coreless current sensor IC series offering small size, fast response, and insulation.
It is capable of fast overcurrent detection in locations where isolation is required, which is difficult to achieve with shunt resistors + insulated amplifiers or cored current sensors. It can also be used with high carrier frequencies.
The CQ330x and CQ320x use the same package and support power supply voltages of 5V and 3.3V respectively. Their lineups meet a wide range of current sensing needs.

This page contains information about the features of the CQ3 series, product details, datasheets, and product lineup information. It also provides technical information such as safety standard information and application notes.

Features

1. Wide band, Fast response time

The CQ3 series utilizes ultra-high accuracy compound Hall elements, one of AKM's strengths, to cover a wide bandwidth (1000kHz frequency) and provide a fast response time (0.5 μsec). As a result, it can instantly detect current when overcurrent flows.
Furthermore, it can also adjust to the high carrier frequency caused by next-generation power devices (GaN/SiC).

2. Small-sized, Insulated

The CQ3 series adapt an small SOP package (D/W/H:7.6mm×7.9mm×1.15mm). It uses Material Group=1 molded resin and can provide reinforced insulation even in 200V systems.
In addition, it is IEC/UL62368 certified and can be used in many applications where insulation is required.

3. Wide Product Lineup

Wide product lineups can be provided at VDD=5V and 3.3V.

CQ330x Power Supply Voltage= 5V Bipolar:±4.5 ~ ±42A Unipolar:20.5 ~ 42A
CQ320x Power Supply Voltage= 3.3V Bipolar:±8.5 ~ 44A Unipolar:20.9A 

CQ3 Series CQ3 Series

Applications

  • Home appliances
  • Overcurrent detection of Industrial machineries
  • Switching power supply
  • Power conditioners (DC side)
It is suitable for the application which requires insulation and fast response.

Specifications

Series
 
  CQ3 Series
Current sensor type   Coreless Current Sensor IC :
Currentier
Package size [mm] 7.6 x 7.9 x 1.15
Package Type (Mounting style)   Small Outline Package (SOP)
Power Supply Voltage [V] CQ320x : 3.3
(2.7 to 3.63)
CQ330x : 5.0
(4.5 to 5.5)
Operating Temperature [℃] -40 to 90
Maximum Primary
Current
[Arms] 20
Working Voltage 
(pollution degree=2)
[Vrms] 500
(reinforced insulation)
Creepage / Clearance
Distance (min.)
[mm] 5.0
Primary conductor
resistance (Typ.)
[mΩ] 1.6
Isolation Voltage [kVrms] 3.0
(AC50/60Hz, 60s)
VREF Pin   Non-existence
Disturbance magnetic field
fluctuation suppression  function
  Non-existence
Overcurrent
detection function
  Non-existence
Ratiometric /
Non-Ratiometric
  Ratiometric
Safety Standards   IEC/UL62368-1 certified
UL508 certified
Pb Free   Yes
Halogen Free   Yes
MSL   MSL2a
JEDEC Standard Packaging   Compliant
Packaging    
Minimum Order Quantity [pcs.] 1000
Part Status
 
  Preview
Block Diagram CQ3 Series Block Diagram

Lineup

CQ3 Series You can download a datasheet (PDF file) below.

Product 
Name
Power
Supply
Voltage
Linear 
Sensing 
Range
Sensitivity Bipolar/
Unipolar
 
Bandwidth
Response
time
Temperature 
Drift of 
Sensitivity *1
Temperature
Drift of
Zero-current
Output *2
Total 
Accuracy *3
Datasheet 
Download
(PDF)
[V] [A] [mV/A)] [kHz] [μs] [%] [mV] [%F.S.]
CQ3200 3.3 ±8.5 155 Bipolar 1000 0.5 ±0.7 ±10 ±1.3 CQ3200 DS
CQ3201 ±10.1 130 ±9 ±1.3 CQ3201 DS
CQ3202 ±21.1 62.5 ±7 ±1.2 CQ3202 DS
CQ320A ±29.3 45 ±7 ±1.2 CQ320A DS
CQ3203 ±35.7 37 ±7 ±1.2 CQ3203 DS
CQ3204 ±44.0 30 ±7 ±1.2 CQ3204 DS
CQ320B -1.1 to 20.9 120 Unipolar ±9 ±1.9 CQ320B DS
CQ330G 5 ±4.5 450 Bipolar ±2.2 ±38 ±2.2 CQ330G DS
CQ3300 ±6.4 325 ±1.4 ±26 ±1.3 CQ3300 DS
CQ3301 ±10.7 195 ±1.4 ±16 ±1.3 CQ3301 DS
CQ3302 ±21.0 100 ±1.4 ±10 ±1.3 CQ3302 DS
CQ330A ±31.8 66 ±1.4 ±10 ±1.3 CQ330A DS
CQ3303 ±35.0 60 ±1.4 ±10 ±1.3 CQ3303 DS
CQ330H ±42.0 50 ±2.3 ±10 ±1.3 CQ330H DS
CQ330E ±0 to 20.5 200 Unipolar ±1.6 ±23 ±2.2 CQ330E DS
CQ330B ±0 to 21.0 195 ±2.1 ±19 ±2.6 CQ330B DS
CQ330F -2.0 to 42.0 80 ±2.3 ±10 ±2.6 CQ330F DS
CQ330J -2.0 to 42.0 82.7 ±2.3 ±10 ±2.6 CQ330J DS

[Notes]

*1 Change ratio of Sensitivity (Ta=35°C) . Temperature range -40 ~ 90°C
*2 Change ratio of Zero-Current Output Voltage(Ta=35°C) . Temperature range -40 ~ 90°C
*3 Temperature range Ta=-40 ~ 90°C

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 CQ3 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