TL431 / TL431A / TL431B

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 5

Copyright

Rev. 1.4, 2006-09-26

Precision programmable References

TM

®

CHARACT ER ISTIC CURVES

2.44

2.4

(T

Ambient Temperature - (°C)

-50

-25

0

25

50

75

100

125

V

I

2.42

2.46

2.48

2.50

2.52

2.54

2.56

2.58

2.60

V

V

V

TL431B

TL431/A

TL431/A

TL431/A

Figure 1 –

Reference Voltage vs. Free-Air Temperature

1

0

(T

Ambient Temperature - (°C)

5

2

-50

-25

0

25

50

75

100

125

3

I

R1 =

I

4

TL431/A

TL431B

Figure 2 –

Reference Current vs. Free-Air Temperature

0

-100

(V

Cathode Voltage - (V)

150

-2

-1

0

1

23

50

V

T

100

-75

-50

-25

25

75

125

TL431/A

TL431B

Figure 3 –

Cathode Current vs. Cathode Voltage

0

-200

(V

Cathode Voltage - (V)

800

200

-1

0

1

23

400

I

MIN

600

V

T

Figure 4 –

Cathode Current vs. Cathode Voltage