TL431 datasheet(2/4 Pages) PJSEMI

Part #	TL431

Description	Programmable Precision Reference

PDF	4 Pages

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Manufacturer	PJSEMI [Dongguan Pingjingsemi Technology Co., Ltd,]

Direct Link	http://www.pingjingsemi.com/MainEn/Main.aspx

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Electrical Characteristics (Ta=25℃ unless otherwise specified)

Symbol

Parameter

Test Conditions

Min. Typ.

Max. Unit

VREF

Reference Input Voltage

VKA=VREF, IKA=10mA

TL431

(1%)

2.4

7 2.495 2.52

TL431A

(0.5%)

2.48

3 2.495 2.507

∆VREF

Deviation of

Reference Input Voltage

Over

Temperature

VKA=VREF,IKA=10mA,

40°C ≤TA≤+85°C

4.5

∆VREF

∆VKA

Ratio of Change in Reference Input Voltage to

the Change in Cathode Voltage

IKA=10mA



VKA=10V~VREF

-1.0

-2.7 mV/V



VKA=36V~10V

-0.5

-2.0 mV/V

IREF

Reference Input Current

IKA=10mA, R1=10kΩ, R2=∞

1.5

µA

∆IREF

Deviation of Reference Input Current Over Full

Temperature Range

IKA=10mA, R1=10kΩ, R2=∞,

-25°C ≤TA≤+85°C

0.4

1.2

µA

IKA(MIN)

Minimum Cathode Current for Regulation

VKA=VREF

0.45

IKA(OFF)

Off-State Cathode Current

VKA=36V, VREF=0

0.05

1.0

µA

ZKA

Dynamic Impedance

VKA=VREF, IKA=1~ 100mA,f≤1.0kHz

0.15

0.5

Ω

TL431/A/B

Programmable Precision Reference

www.pingjingsemi.com

Revision：

3.0 Feb-2020

TL431

B(0.4%)

2.48

5 2.495 2.505

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