LM431K-XX-TR70 datasheet(4/14 Pages) TAITRON

Part #	LM431K-XX-TR70

Description	Shunt Regulator

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Manufacturer	TAITRON [TAITRON Components Incorporated]

Direct Link	http://www.taitroncomponents.com

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4 / 14 page

Shunt Regulator

Rev. A/DX 2007-06-04

LM431

www.taitroncomponents.com

Page 4 of 14

Electrical Characteristics (T

A=25ºC, unless otherwise specified)

LM431

LM431A

LM431B

Symbol

Description

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Unit

Test

Circuit

Conditions

VREF

Reference Input

Voltage

2.440

2.495

2.550

2.480

2.500

2.520

2.490

2.500

2.510

V

Fig.1

VKA=VREF,IKA=10mA

0-70° C

-

4.8

8

-

4.5

8

∆VREF

Reference

Input

Voltage

Deviation

-40-85

°C

-

7.0

30

-

4.5

10

-

4.5

10

mV

Fig.1

(Note1)

VKA=VREF,IKA=10mA

-

-1.4

-2.7

-

-1.0

-2.7

-

-1.0

-2.7

∆VKA=10V~

VREF

∆VREF/∆VKA

Ratio of Change in

Reference Input

Voltage to Change in

Cathode to Anode

Voltage

-

-1.0

-2.0

-

-0.5

-2.0

-

-0.5

-2.0

mV/V

Fig.2

IKA=

10mA

∆VKA=36V~

10V

Ta=25°

C

-

1.8

4.0

-

0.7

4.0

-

0.7

4.0

IREF

Referenc

e Input

Current

Ta=Topr

-

6.5

-

µA

Fig.2

IKA=10mA, R1=10KΩ,

R2=∞

∆IREF

Reference Input

Current Deviation

-

0.8

2.5

-

0.4

1.2

-

0.4

1.2

µA

Fig.2

IKA=10mA, R1=10KΩ,

R2=∞,

-40 ~ 85° C

IMIN

Min. Cathode Current

For Regulation

-

0.5

1.0

-

0.4

1.0

-

0.4

1.0

mA

Fig.1

VKA=VREF

IOFF

Off-State Cathode

Current

-

2.6

1000

-

50

1000

-

50

1000

nA

Fig.3

VKA=36V, VREF=0V

ZKA

Dynamic Impedance

-

0.22

-

0.15

0.5

-

0.15

0.5

Ω

Fig.1

(Note2)

VKA=VREF,

IKA=1.0~100mA,

f≤1.0KHz

Fig.1- Test Circuit for VKA=VREF

Fig.2- Test Circuit for VKA>VREF

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LM431K-XX-TR70 Datasheet(PDF) 4 Page - TAITRON Components Incorporated

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