WCS3740

Winson reserves the right to make changes to improve reliability or manufacturability.

© Winson, 2017/12/20

Electrical Characteristics:

(T=+25˚C, Vdd=5.0V )

Characteristic

Symbol Test Conditions Min

Typ

Max Units

Supply Voltage

Vdd

─

3.0

─

12

V

Supply Current

Isupply

IP =0 A

─

3.5

6.0

mA

Zero Current Vout

V0G

IP =0 A(DC Mode)

2.4

2.5

2.6

V

Primary Conductor Resistance

Rprimary

IP =10 A

─

125

─

μΩ

Sensitivity

Sens

IP =+-10 A

27

32

37

mV/A

Bandwidth

BW

─

－

23

－

kHz

Measurable Current Range

MR

Vdd=5V (DC Mode)

－

±40

－

A

Vdd=5V (AC RMS )

－

30

－

Temperature Drift

△Vout

Ip =0 A

－

±0.5

－

mV/℃

Output Noise

VNp-p

—

—

7.5

—

mV

1. All output-voltage measurements are made with a voltmeter having an input impedance of at least 100kΩ

2. Do not apply any ‘resistor load’ on output pin, it will degrade IC’s performance

Characteristic Diagrams:

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

3

4

5

6

7

8

9

10

11

12

Supply Voltage--Vdd(V)

WCS3740 Sensitivity V.S Supply Voltage

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5

Supply Voltage--Vdd(V)

WCS3740 Sensitivity V.S Supply Voltage

y = 0.0304x + 2.478

R²= 0.9992

0

1

2

3

4

5

-40

-30

-20

-10

0

10

20

30

40

Primary Current--IP(A)

WCS3740 Vout V.S IP with Vdd 5V

y = 0.0267x + 1.6348

R²= 0.9987

0

0.5

1

1.5

2

2.5

3

3.5

-40

-30

-20

-10

0

10

20

30

40

Primary Current--IP(A)

WCS3740 Vout V.S IP with Vdd 3.3V