LP PACKAGE

(TOP VIEW)

CATHODE

ANODE

REF

FK PACKAGE

(TOP VIEW)

3

2

1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

NC

NC

NC

ANODE

NC

NC

NC

NC

NC

NC

1

2

3

4

8

7

6

5

CATHODE

ANODE

ANODE

NC

REF

ANODE

ANODE

NC

D PACKAGE

(TOP VIEW)

NC – No internal connection

ANODE terminals are connected internally

.

1

2

3

4

8

7

6

5

CATHODE

NC

NC

NC

REF

NC

ANODE

NC

JG OR PW PACKAGE

(TOP VIEW)

NC – No internal connection

KTP PACKAGE

(TOP VIEW)

CATHODE

ANODE

REF

TL1431

www.ti.com

SLVS062M – DECEMBER 1991 – REVISED APRIL 2012

PRECISION PROGRAMMABLE REFERENCE

Check for Samples: TL1431

1

FEATURES

2

•

0.4% Initial Voltage Tolerance

•

Sink Current Capability…1 mA to 100 mA

•

0.2-

Ω Typical Output Impedance

•

Low Reference Current (REF)

•

Fast Turnon…500 ns

•

DESCRIPTION/ORDERING INFORMATION

The TL1431 is a precision programmable reference with specified thermal stability over automotive, commercial,

and 36 V with two external resistors (see Figure 16). This device has a typical output impedance of 0.2

Ω. Active

output circuitry provides a very sharp turnon characteristic, making the device an excellent replacement for Zener

diodes and other types of references in applications such as onboard regulation, adjustable power supplies, and

switching power supplies.

The TL1431C is characterized for operation over the commercial temperature range of 0°C to 70°C. The

TL1431Q is characterized for operation over the full automotive temperature range of –40°C to 125°C. The

TL1431M is characterized for operation over the full military temperature range of –55°C to 125°C.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

PowerFLEX is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 1991–2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.