TL431CD datasheet(1/9 Pages) FCI

Part #	TL431CD

Description	Programmable Precision References

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Manufacturer	FCI [First Components International]

Direct Link	http://www.cotra.com.tw/

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TL431 Programmable Precision References

FEATURES

l Programmable Output Voltage to 36 Volts

l Low Dynamic Output Impedance, 0.22 Ω Typical

l Sink Current Capability of 1.0 to 100 mA

l Equivalent Full-Range Temperature Coefficient of

50 ppm/oC Typical

l Temperature Compensated for operation over

Full Rated Operating Temperature Range

l Low Output Noise Voltage

TO-92

The TL431 integrated circuits are three-terminal

programmable shunt regulator diodes. These monolithic

IC voltage references operate as a low temperature

coefficient zener which is programmable from Vref to

36 volts with two external resistors. These devices

exhibit a wide operating current range of 1.0 to 100mA

with a typical dynamic impedance of 0.22

Ω. The

characteristics of these references make them

Pin: 1. Reference

2. Anode

3. Cathode

excellent replacements for zener diodes in many

applications such as digital voltmeters, power supplies,

and op amp circuitry. The 2.5 volt reference makes it

convenient to obtain a stable reference from 5.0 volt

logic supplies, and since the TL431 operates as a shunt

regulator, it can be used as either a positive or negative

voltage reference.

PINARRANGEMENT

DIP-8

Pin: 1. Cathode

6. Anode

8. Reference

Other Pins: NC

SOP-8

Pin: 1. Cathode

5. NC

2. Anode

6. Anode

3. Reference

7. Anode

4. NC

8. Reference

This SOP-8 is an internally modified SOP-8 Package.

Pins 2, 3, 6 and 7 are electrically common to the die

attach flag. This internal lead frame modification

decreases package thermal resistance and increases

power dissipation capability when appropriately

mounted on a printed circuit board.

This SOP-8

conforms to all external dimensions of the standard

SOP-8 package.

CIRCUITSCHEMATIC

ORDERINGINFORMATION

FUNCTIONAL BLOCK DIAGRAM

SYMBOL

Temperature

Device

Range

Package

TL431CT

TO-92

TL431CD

0 to +70 oC

DIP-8

TL431CS

SOP-8

TL431IT

TO-92

TL431ID

-40 to +85 oC

DIP-8

TL431IS

SOP-8

9-1

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