CJ431K-HF datasheet(2/6 Pages) COMCHIP

Part #	CJ431K-HF

Description	Encapsulate Adjustable Reference Source

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Manufacturer	COMCHIP [Comchip Technology]

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Electrical Characteristics ( Ta=25°C unless otherwise specified )

Parameter

Conditions

Typ.

Max.

Unit

IKA

10mA

=

Min.

Off-state cathode current (Fig.3)

Dynamic impedance

4.5

V

-2.7

0.5

0.15

V

mV/V

Ω

lKA =

=

10mA, R1

10 kΩ

R2

∞

=

4

1.5

µA

Reference input current ( ig.2)

F

lKA

10mA, R1 = 10 kΩ

=

R2 = ∞

Ta

full Temperature

=

1.2

VKA

VREF

=

regulation (Fig.1)

Minimum cathode current for

0.45

0.4

mA

µA

1.0

VKA

VREF

, IKA

10mA

=

Tmin ≤ Ta ≤ Tmax

Deviation of reference input voltage

over temperature (note) ( ig.1)

F

17

mV

Reference input voltage ( ig.1)

F

Ratio of change in reference input

voltage to the change in cathode

voltage ( ig.2)

F

Deviation of reference input current

over full temperature range ( ig.2)

F

VKA

VREF

, IKA

10mA

=

Symbol

△Vref △

/ T

△

/△

Vref

VKA

IKA(OFF)

ZKA

lref

IKA(min)

△lref △T

/

Vref

△

= 10V

VKA

~VREF

△

= 36V~

VKA

10V

VKA

40V, VREF

0

=

µA

VKA =

,

=

VREF lKA

1 to 100mA

f

1.0kHz

≤

2.470

2.520

-1.0

-2.0

-0.5

mV/V

0.05

0.5

Note: TMIN= 0°C, TMAX= +70°C

Range

Rank

2.482 - 2.508

1%

2.47 - 2.52

0.5%

Classification of Vref

Page 2

REV: A

Comchip Technology CO., LTD.

Company reserves the right to improve product design , functions and reliability without notice.

Encapsulate Adjustable Reference Source

Fig.1 - Test Circuit for VKA = Vref

VKA

IK

Fig.2 - Test Circuit

VKA > Vref

for

Fig.3 - Test Circuit

Ioff

for

Vref

lnput

VKA

lnput

lref

IK

Vref

R1

R2

VKA

lnput

Ioff

VKA =

(

lref‧R1

Vref 1+R1/R2)+

QW-JKA01

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