Philips Semiconductors

Product specification

TL431C, TL431AC, TL431I,

TL431AI, LM431AC

Adjustable precision shunt regulators

2

1997 Feb 25

853–1927 17795

DESCRIPTION

The TL431 and TL431A are 3-terminal adjustable shunt regulators

with specified thermal stability over applicable automotive and

commercial temperature ranges. The output voltage may be set to

external resistors (see Figure 4). These devices have a typical

output impedance of 0.2

Ω. Active output circuitry provides a very

sharp turn-on characteristic, making these devices excellent

replacements for zener diodes in many applications like on-board

regulation, adjustable power supplies and switching power supplies.

The TL431C and TL431AC are characterized for operation from

0

°C to +70°C; the TL431I and TL431AI are characterized for

operation from –40

°C to +85°C.

FEATURES

PIN CONFIGURATIONS

1

2

3

45

6

7

8

CATHODE

ANODE

ANODE

NC

REF

ANODE

ANODE

NC

CATHODE

ANODE

REF

M, D Package

SOT96-1

1

2

3

45

6

7

8

CATHODE

NC

NC

NC

REF

NC

ANODE

NC

N, P Package

SOT97-1

Z, LP, U Package

SOT54

SL01167

TOP VIEW

TOP VIEW

Figure 1.

Pin Configuration

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE

RANGE

INDUSTRY STANDARD

PART NUMBER

ORDER CODE

DWG #

0

°C to +70°C

TL431CLP

TL431CLPU

SOT54

0

°C to +70°C

TL431ACLP

TL431ACLPU

SOT54

–40

°C to +85°C

TL431ILP

TL431ILPU

SOT54

–40

°C to +85°C

TL431AILP

TL431AILPU

SOT54

0

°C to +70°C

LM431ACZ

LM431ACZU

SOT54

8-Pin Plastic Small Outline (SO) package

0

°C to +70°C

TL431CD

TL431CD

SOT96-1

8-Pin Plastic Small Outline (SO) package

–40

°C to +85°C

TL431ID

TL431ID

SOT96-1

8-Pin Plastic Small Outline (SO) package

0

°C to +70°C

TL431ACD

TL431ACD

SOT96-1

8-Pin Plastic Small Outline (SO) package

–40

°C to +85°C

TL431AID

TL431AID

SOT96-1

8-Pin Plastic Small Outline (SO) package

0

°C to +70°C

LM431ACM

LM431ACMD

SOT96-1

8-Pin Plastic Dual In-Line package (DIP)

0

°C to +70°C

TL431CP

TL431CPN

SOT97-1

8-Pin Plastic Dual In-Line package (DIP)

–40

°C to +85°C

TL431IP

TL431IPN

SOT97-1

8-Pin Plastic Dual In-Line package (DIP)

0

°C to +70°C

TL431ACP

TL431ACPN

SOT97-1

8-Pin Plastic Dual In-Line package (DIP)

–40

°C to +85°C

TL431AIP

TL431AIPN

SOT97-1

NOTE:

1. SYMBOL INFORMATION: Parts will be marked with product name including temperature and electrical grade desginators, but not the

package identifier.

2. TO92 is normally shipped in bulk, i.e., in plastic bags (containing 1,000 parts), 5 bags per box. Tape and reel (or ammo box) is an option.

See page 15 for information.