LM431SCCMFX datasheet(3/12 Pages) FAIRCHILD

No. de pieza	LM431SCCMFX

Descripción Electrónicos	Programmable Shunt Regulator

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Fabricante Electrónico	FAIRCHILD [Fairchild Semiconductor]

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LM431SA/LM431SB/LM431SC Rev. 1.2.0

3

Electrical Characteristics

(TA = +25°C, unless otherwise specified)

Note1

TMIN = -25°C, TMAX = +85°C

Parameter

Symbol

Conditions

LM431SA

LM431SB

LM431SC

Unit

Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.

Reference

Input Voltage

VREF

VKA=VREF, IKA=10mA

2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508

V

Deviation of

Reference

Input Voltage

Over-

Temperature

ΔV

REF/ΔT

VKA=VREF,

IKA=10mA

TMIN≤TA≤TMAX

SOT-89

SOT-23F

-

4.5

17

-

4.5

17

-

4.5

17

mV

SOT-23

-

6.6

24

-

6.6

24

-

6.6

24

mV

Ratio of

Change in

Reference

Input Voltage

to the Change

in Cathode

Voltage

ΔV

REF/

ΔV

KA

IKA =10mA

ΔV

KA=10V

-VREF

-

-1.0

-2.7

-

-1.0

-2.7

-

-1.0

-2.7

mV/V

ΔV

KA=36V

-10V

-

-0.5

-2.0

-

-0.5

-2.0

-

-0.5

-2.0

Reference

Input Current

IREF

IKA=10mA,

R1=10KΩ,R2=∞

-

1.5

4

-

1.5

4

-

1.5

4

μA

Deviation of

Reference

Input Current

Over Full

Temperature

Range

ΔI

REF/ΔT

IKA=10mA,

R1=10KΩ,

R2=∞,

TA =Full Range

SOT-89

SOT-23F

-

0.4

1.2

-

0.4

1.2

-

0.4

1.2

μA

SOT-23

-

0.8

2.0

-

0.8

2.0

-

0.8

2.0

μA

Minimum

Cathode

Current for

Regulation

IKA(MIN)

VKA=VREF

-

0.45

1.0

-

0.45

1.0

-

0.45

1.0

mA

Off -Stage

Cathode

Current

IKA(OFF)

VKA=36V, VREF=0

-

0.05

1.0

-

0.05

1.0

-

0.05

1.0

μA

Dynamic

Impedance

ZKA

VKA=VREF,

IKA=1 to 100mA ,

f

≥1.0kHz

-

0.15

0.5

-

0.15

0.5

-

0.15

0.5

Ω

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