UNISONIC TECHNOLOGIES CO., LTD

TL431

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

1 of 6

Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R103-003,R

PROGRAMMABLE PRECISION

REFERENCE

.

DESCRIPTION

The UTC TL431 is a three-terminal adjustable regulator with a

guaranteed thermal stability over applicable temperature ranges.

(approximately 2.5V) and 36 V with two external resistors. It

provides very wide applications, including shunt regulator, series

regulator, switching regulator, voltage reference and others.

FEATURES

*Programmable output Voltage to 36V.

*Low dynamic output impedance 0.2

Ω.

*Sink current capability of 1.0 to 100mA.

*Equivalent full-range temperature coefficient of 50ppm/

°C

typical for operation over full rated operating temperature range.

TO-92

1

SOP-8

SOT-89

1

SOT-25

SOT-23

1

3

2

4

5

3

2

1

*Pb-free plating product number: TL431K

*Pb-free plating product for SOT-23NS type

number: TL431NSL

ORDERING INFORMATION

Order Number

Pin Assignment

Normal

Lead Free Plating

1

2

3

4

5

6

7

8

Package

Packing

TL431-AB3-R

TL431K-AB3-R

R A K

-

-

-

-

-

SOT-89

Tape Reel

TL431-AE3-R

TL431K-AE3-R

K R A

-

-

-

-

-

SOT-23

Tape Reel

TL431NS-AE3-R

TL431NSL-AE3-R

R K A

-

-

-

-

-

SOT-23

Tape Reel

TL431-AF5-R

TL431K-AF5-R

X X K R A

-

-

-

SOT-25

Tape Reel

TL431-S08-R

TL431K-S08-R

K AAXX AA R

SOP-8

Tape Reel

TL431-S08-T

TL431K-S08-T

K AAXX AA R

SOP-8

Tube

TL431-T92-B

TL431K-T92-B

R A K

-

-

-

-

-

TO-92

Tape Box

TL431-T92-K

TL431K-T92-K

R A K

-

-

-

-

-

TO-92

Bulk

TL431-T92-R

TL431K-T92-R

R A K

-

-

-

-

-

TO-92

Tape Reel

Note: Pin Code:

K: Cathode

A: Anode

R: Reference

X: No Connection

TL431K-AB3-R

(1)Packing Type

(2)Package Type

(3)Lead Plating

(1) B: Tape Box, K: Bulk, R: Tape Reel, T: Tube

(2) AB3: SOT-89, AE3: SOT-23, AF5: SOT-25,

S 08:SOP-8, T92: TO-92

(3) K: Lead Free Plating, Blank: Pb/Sn

L : Lead Free Plating, Only for SOT-23NS Type

MARKING (SOT-23/SOT-25)

431

431N

For TL431

For TL431NS

Lead Plating

Lead Plating