LM431B データシートの表示（PDF） - TAITRON Components Incorporated

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LM431B

Shunt Regulator

TAITRON Components Incorporated 

Shunt Regulator

LM431

Electrical Characteristics (TA=25ºC, unless otherwise specified)

Symbol

VREF

Description

Reference Input

Voltage

LM431

Min. Typ. Max.

LM431A

Min. Typ. Max.

LM431B

Min. Typ. Max.

Unit

Test

Circuit

Conditions

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

Reference 0-70° C

-

-

-

-

4.8

8

-

4.5

8

∆VREF

Input

Voltage

Deviation

-40-85

-

7.0

30

-

4.5

10

-

mV

Fig.1

(Note1)

VKA=VREF,IKA=10mA

4.5

10

°C

∆VREF/∆VKA

Ratio of Change in

Reference Input

Voltage to Change in

Cathode to Anode

Voltage

-

-

-1.4 -2.7

-1.0 -2.0

-

-

-1.0 -2.7

-0.5 -2.0

-

-

-1.0 -2.7

mV/V

-0.5 -2.0

Fig.2

IKA=

10mA

∆VKA=10V~

VREF

∆VKA=36V~

10V

IREF

Ta=25°

Referenc C

-

e Input

Current

Ta=Topr

-

1.8 4.0

-

6.5

-

-

0.7 4.0

-

-

-

-

0.7 4.0

µA

-

-

Fig.2

IKA=10mA, R1=10KΩ,

R2=∞

∆IREF

Reference Input

Current Deviation

IKA=10mA, R1=10KΩ,

-

0.8 2.5

-

0.4 1.2

-

0.4

1.2

µA

Fig.2

R2=∞,

-40 ~ 85° C

IMIN

IOFF

ZKA

Min. Cathode Current

For Regulation

-

0.5 1.0

-

0.4 1.0

-

0.4 1.0 mA

Fig.1

VKA=VREF

Off-State Cathode

Current

Dynamic Impedance

-

2.6 1000

-

50 1000

-

-

0.22

-

-

0.15 0.5

-

50 1000 nA

0.15 0.5

Ω

Fig.3

Fig.1

(Note2)

VKA=36V, VREF=0V

VKA=VREF,

IKA=1.0~100mA,

f≤1.0KHz

Fig.1- Test Circuit for VKA=VREF

Fig.2- Test Circuit for VKA>VREF

www.taitroncomponents.com

Rev. A/DX 2007-06-04

Page 4 of 14

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