Issue 2 - June 2006

1

www.zetex.com

© Zetex Semiconductors plc 2006

ZTLV431

1.24V Cost effective shunt regulator

Description

The ZTLV431 is a three terminal adjustable shunt regulator offering

excellent temperature stability and output current handling capability up to

20mA. The output voltage may be set to any chosen voltage between 1.24

volts and 10 volts by selection of two external divider resistors.

The ZTLV431 can be used as a replacement for zener diodes in many

applications requiring an improvement in zener performance.

The ZTLV431 is available as standard as an A grade which has an initial

tolerance of 1%; a B grade is planned with an initial tolerance of 0.5%,

and all cover the -40°C to 125°C temperature range as standard.

Features

•

•

Temperature range -40 to 125°C

•

Reference voltage tolerance at 25°C

•

0.5% ZTLV431B

•

1% ZTLV431A

•

Typical temperature drift

•

4 mV (0°C to 70°C)

•

6 mV (-40°C to 85°C)

•

11mV (-40°C to 125°C)

•100 A minimum cathode current

•0.25

typical output impedance

•

Adjustable output voltage 1.24V to 10V

Applications

•

Opto-coupler linearization

•

Linear regulators

•

Improved Zener

•

Variable reference

Ordering information

Tol.

Order code

NOTES:

(*) For availability of preview status devices contact your local Zetex sales representative

Reel size

Tape width

(mm)

Quantity

per reel

1%

ZTLV431AE5TA

SOT23-5

S1A

Preview

7” (180mm)

8

3,000

ZTLV431AFTA

SOT23

S1A

Active

7” (180mm)

8

3,000

ZTLV431AFFTA

SOT23F

S1A

Preview

7” (180mm)

8

3,000

0.5%

ZTLV431BE5TA

SOT23-5

S1B

Preview

7” (180mm)

8

3,000

ZTLV431BFTA

SOT23

S1B

Preview

7” (180mm)

8

3,000

ZTLV431BFFTA

SOT23F

S1B

Preview

7” (180mm)

8

3,000

1

Ref

ZTLV431_F (SOT23)

(top view)

Pin connections

Cathode 2

3 Anode

1

Ref

ZTLV431_FF (SOT23F)

(top view)

Cathode 2

3 Anode

Preview

ZTLV431_E5 (SOT23-5)

(top view)

N/C

N/C

Cathode

Anode

Ref

1

2

3

5

4

Preview