LM431LK-XX-TR70 datasheet(4/13 Pages) TAITRON

Part #	LM431LK-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 / 13 page

Shunt Regulator

Rev. A/DX 2007-06-04

LM431L

www.taitroncomponents.com

Page 4 of 13

Electrical Characteristics (T

A=25ºC, unless otherwise specified)

LM431L

LM431LA

LM431LB

Symbol

Description

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Unit

Test

Circuit

Conditions

VREF

Reference Input

Voltage

1.222

1.240

1.258

1.228

1.240

1.252

1.234

1.240

1.246

V

Fig.1

VKA=VREF,IKA=10mA

0-70° C

-

2

1-

-

2

10

-40-85

° C

-

7.0

20

-

3

10

-

3

10

∆VREF

Reference

Input

Voltage

Deviation

-40-125

° C

-

4

15

-

4

15

mV

Fig.1

(Note1)

VKA=VREF,IKA=10mA

∆VREF/∆VKA

Ratio of Change in

Reference Input

Voltage to Change in

Cathode to Anode

Voltage

-

-0.6

-1.5

-

-0.5

-1.5

-

-0.5

-1.5

mV/V

Fig.2

IKA=

10mA

∆VKA=

VKA(max)

~VREF

IREF

Reference

Input

Current

Ta=25°

C

-

0.15

0.3

-

0.15

0.4

-

0.15

0.4

µA

Fig.2

IKA=10mA, R1=10KΩ,

R2=∞

∆IREF

Reference Input

Current Deviation

Over Temperature

Range

-

0.05

0.08

-

0.1

0.4

-

0.1

0.4

µA

Fig.2

IKA=10mA, R1=10KΩ,

R2=∞

IMIN

Min. Cathode Current

For Regulation

-

55

80

-

55

80

-

55

80

µA

Fig.1

VKA=VREF

-

2.6

1000

-

40

100

-

40

100

VKA= VKA(max),

VREF=0V

IOFF

Off-State Cathode

Current

-

10

50

-

10

50

nA

Fig.3

VKA=6V, VREF=0V

ZKA

Dynamic Impedance

-

0.22

0.4

-

0.05

0.15

-

0.05

0.15

Ω

Fig.1

(Note2)

VKA=VREF,

IKA=1.0mA~ IKA(max),

f≤1.0KHz

Fig.1- Test Circuit for VKA=VREF

Fig.2- Test Circuit for VKA>VREF

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