TL431 datasheet(4/83 Pages) TI

Part #	TL431

Description	TL431, TL432 Precision Programmable Reference

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Manufacturer	TI [Texas Instruments]

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6 Pin Configuration and Functions

CATHODE

ANODE

REF

TL431 . . . KTP (PowerFLEX

/TO-252) PACKAGE

(TOP VIEW)

TL431A, TL431B . . . DCK (SC-70) PACKAGE

(TOP VIEW)

1

2

3

6

5

4

CATHODE

NC

REF

ANODE

NC

NC − No internal connection

TL431, TL431A, TL431B . . . LP (TO-92/TO-226) PACKAGE

(TOP VIEW)

CATHODE

ANODE

REF

1

2

3

4

8

7

6

5

CATHODE

ANODE

NC

REF

ANODE

NC

TL431, TL431A, TL431B . . . D (SOIC) PACKAGE

(TOP VIEW)

1

2

3

4

8

7

6

5

CATHODE

NC

REF

NC

ANODE

NC

TL431, TL431A, TL431B . . . P (PDIP), PS (SOP),

OR PW (TSSOP) PACKAGE

(TOP VIEW)

NC − No internal connection

TL431, TL431A, TL431B . . . DBV (SOT-23-5) PACKAGE

(TOP VIEW)

1

2

3

5

4

NC

†

CATHODE

ANODE

REF

TL431, TL431A, TL431B . . . PK (SOT-89) PACKAGE

(TOP VIEW)

REF

ANODE

CATHODE

† Pin 2 is attached to Substrate and must be

connected to ANODE or left open.

NC − No internal connection

TL432, TL432A, TL432B . . . DBV (SOT-23-5) PACKAGE

(TOP VIEW)

1

2

3

5

4

NC

ANODE

NC

REF

CATHODE

NC − No internal connection

TL431, TL431A, TL431B . . . DBZ (SOT-23-3) PACKAGE

(TOP VIEW)

TL432, TL432A, TL432B . . . DBZ (SOT-23-3) PACKAGE

(TOP VIEW)

NC − No internal connection

1

2

3

REF

CATHODE

ANODE

1

2

3

CATHODE

REF

ANODE

TL432, TL432A, TL432B . . . PK (SOT-89) PACKAGE

(TOP VIEW)

REF

ANODE

CATHODE

Table 6-1. Pin Functions

TYPE

DESCRIPTION

NAME

TL431x

TL432x

DBZ

DBV

PK

D

P, PS

PW

LP

KTP

DCK

DBZ

DBV

PK

CATHODE

1

3

1

2

4

1

I/O

Shunt Current/Voltage input

REF

2

4

1

8

3

1

5

3

I

Threshold relative to common anode

ANODE

3

5

2

2, 3,

6, 7

6

2

6

3

2

O

Common pin, normally connected to ground

TL431, TL432

SLVS543Q – AUGUST 2004 – REVISED JULY 2022

www.ti.com

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