CQ-3 Series

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

CQ-3200, CQ-3201, CQ-3202, CQ320A, CQ3203, CQ-3204, CQ-320B

CQ-330G, CQ-3300, CQ-3301, CQ-3302, CQ-330A, CQ-3303, CQ-330H, CQ-330E, CQ-330B, CQ-330F, CQ-330J  

Shunt resistor + isolation amplifier or cored current sensor cannot acheive small size, fast response and insultaion all together.
CQ3 series overcome the difficulty. It is achieved to detect overcurrent instantly at insulated place, and adjust to the high carrier frequency 

 VDD=5V : CQ-330x

 VDD=3.3V : CQ-320x

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.

Features

Wide band, Fast response time

CQ3 is composed of ultra-high accuracy compound hall element, which AKM has strengths in.
By using AKM's original hall element, it is achieved wide band frequency and fast response.
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).

Small-sized, Insulated

The CQ3 series adapt an small SOP package (D/W/H:7.6mm×7.9mm×1.15mm). 
By developing AKM's original package, both creepage distance and clearance of 5.0mm or more is achieved.
Using the mold resin of CTI=600V, CQ33/CQ32 series achieve reinforced insulation even in 200V system. 
It is certified according to IEC/UL60950, IEC/UL62368 and IEC/UL1577, suitable for various industrial applications.

Wide Product Lineup

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

CQ-3 Series

Lineup

CQ-3 Series

Product 
Name
Power
Supply
Voltage
(V)
Sensitivity
(mV/A)
Linear 
Sensing 
Range
(A)
Bipolar/
Unipolar
 
Bandwidth
(kHz)
Response
time
(μs)
Package
size
(mm)
CQ-3200 3.3 155 ±8.5 Bipolar 1000 0.5 7.6 × 7.9 × 1.15
CQ-3201 130 ±10.1
CQ-3202 62.5 ±21.1
CQ-320A 45 ±29.3
CQ-3203 37 ±35.7
CQ-3204 30 ±44.0
CQ-320B 120 -1.1 to 20.9 Unipolar
CQ-330G 5 450 ±4.5 Bipolar
CQ-3300 325 ±6.4
CQ-3301 195 ±10.7
CQ-3302 100 ±21.0
CQ-330A 66 ±31.8
CQ-3303 60 ±35.0
CQ-330H 50 ±42.0
CQ-330E 200 ±0 to 20.5 Unipolar
CQ-330B 195 ±0 to 21.0
CQ-330F 80 -2.0 to 42.0
CQ-330J 82.7 -2.0 to 42.0

Certified with safety standards

Related Contents

Selection Table

Supply
Voltage
(V)
Output
Voltage
(V)
Effective
Current
(Arms)
Measurement
Range
(Apeak)
Bipolar /
Unipolar
Creepage
Clearance
(mm)
Working
Voltage *
(V)
Product Name Product Series
5.0 5.0 60 ± 5.3 to ± 180
Bipolar ≧ 8 800 CZ370x CZ37 Series
0 to 345.2 Unipolar CZ372x 
3.0 50 ± 11.6 to ± 166.6 Bipolar CZ3AGx CZ3A Series
3.3 3.3 ± 12.9 to ± 129.1 CZ3A0x
5.0 5.0 40 ± 33 to ± 60 ≧ 7.2 715 CZ381x CZ38 Series
5.0 5.0 20 ± 4.5 to ± 42 Bipolar
Unipolar
≧ 5 500 CQ330x CQ3 Series
3.3 3.3 ± 8.5 to ± 44 CQ320x
5.0 5.0 ± 10.7 to ± 42 AK310x AK31 Series

* Pollution Degree II with reinforced insulation