KA431AD datasheet(3/12 Pages) FAIRCHILD

3 / 12 page

KA431/KA431A/KA431L

Electrical Characteristics

(TA = +25

°C, unless otherwise specified)

•TMIN = -25

°C, TMAX = +85°C

Parameter

Symbol

Conditions

KA431

KA431A

KA431L

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

Deviation of

Reference

Input Voltage

Over-

Temperature

∆VREF/

∆T

VKA=VREF,

IKA=10mA

TMIN

≤TA≤TMAX

4.5

Ratio of Change

in Reference

Input Voltage

∆VREF/

∆VKA

IKA

=10mA

∆VKA=10

V-VREF

-1.0

- 2.7

-1.0

- 2.7

-1.0

-2.7

mV/V

to the Change in

Cathode

Voltage

∆VKA=36

V-10V

-0.5

-2.0

-0.5

-2.0

-0.5

-2.0

Reference Input

Current

IREF

IKA=10mA,

R1=10k

Ω,R2=∞

-1.5

1.5

-1.5

µA

Deviation of

Reference

Input Current

Over Full

Temperature

Range

∆IREF/∆T

IKA=10mA,

R1=10k

Ω,R2=∞

TA =Full Range

0.4

1.2

0.4

1.2

0.4

1.2

µA

Minimum

Cathode Cur-

rent for

Regulation

IKA(MIN)

VKA=VREF

0.45

1.0

0.45

1.0

0.45

1.0

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

≥1.0kHz

0.15

0.5

0.15

0.5

0.15

0.5

Ω

KA431AD Datasheet(PDF) 3 Page - Fairchild Semiconductor

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