TL431 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TL431

Programmable voltage reference

STMicroelectronics 

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Electrical characteristics

TL431, TL432

Figure 7. Test circuit for VKA = Vref

Input

R

IK=10mA

Figure 8.

Input

Test circuit for programming mode

R

Output

Output

R1

IREF

IK

VKA

VREF

VKA

R2

VREF

( ) VKA = VREF

1 + R-----1-

R2

+ R1 x IREF

Figure 9. Test circuit for Ioff

VKA=36V

IOFF

Figure 10. Test circuit for phase margin and

voltage gain

10μF

10μF

IK=10mA

Input

VREF

Figure 11. Test circuit for response time

1 mA

0 mA

IK=1mA

Figure 12. Reference voltage vs. temperature

2.54

2.52

2.50

V =V

KA

REF

I = 10 mA

K

2.48

2.46

2.44

-40 -20 0 20 40 60 80 100 120

Temperature (°C)

8/21

Doc ID 4467 Rev 11

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