TL431ACD 参数 Datasheet PDF下载

TL431

ABSOLUTE MAXIMUM RATINGS

Symbol

V

KA

I

k

I

ref

p

d

T

stg

Parameter

Cathode to Anode Voltage

Continuous Cathode Current Range

Reference Input Current Range

Power Dissipation

1)

Storage Temperature Range

TO92

SO8 batwing

Value

37

-100 to +150

-0.05 to +10

625

960

-65 to +150

Unit

V

mA

mA

mW

°C

1. Pd is calculated with T

amb

= +25°C, T

j

= +150°C and R

thja

= 200°C/W for TO92 package

= 130°C/W for SO8 batwing package

OPERATING CONDITIONS

Symbol

V

KA

I

k

T

oper

Parameter

Cathode to Anode Voltage

Cathode Current

Operating Free-air Temperature Range TL431C/AC

TL431I/AI

Value

V

ref

to 36

1 to 100

0 to +70

-40 to +105

Unit

V

mA

°C

ELECTRICAL CHARACTERISTICS

T

amb

= 25°C (unless otherwise specified)

Symbol

Parameter

Reference Input Voltage

T

amb

= 25°C

V

KA

= V

ref

, I

k

= 10 mA

T

min

≤

T

amb

≤

T

max

Reference Input Voltage Deviation Over-

Temperature Range - note 1

V

KA

= V

ref

, I

k

= 10 mA,T

min

≤

T

amb

≤

T

max

Ratio of Change in Reference Input

Voltage to Change in Cathode to Anode

Voltage - (figure 2)

Ik = 10mA

∆V

KA

= 10V to V

ref

∆V

KA

= 36V to 10V

Reference Input Current

Ik = 10mA, R1 = 10kΩ, R2 =

∞

T

amb

= 25°C

T

min

≤

T

amb

≤

T

max

Reference Input Current Deviation

Over Temperature Range

Ik = 10mA, R1 = 10kΩ, R2 =∞

T

min

≤

T

amb

≤

T

max

Minimum Cathode Current for Regulation

V

KA

= V

ref

Off-State Cathode Current

Dynamic Impedance - note 2

V

KA

= V

ref

,∆ I

k

= 1 to100mA, f

≤

1kHZ

TL431C

Min.

2.44

2.423

Typ.

2.495

Max.

2.55

2.567

Min.

2.47

2.453

TL431AC

Typ.

2.495

Max.

2.52

2.537

Unit

V

ref

∆V

ref

V

3

17

3

15

mV

∆Vref

------------

∆Vka

-1.4

-1

-2.7

-2

-1.4

-1

-2.7

-2

mV/V

I

ref

1.8

4

5.2

1.8

4

5.2

µA

∆I

ref

0.4

0.5

2.6

0.22

1.2

1

1000

0.5

0.4

0.5

2.6

0.22

1.2

0.6

1000

0.5

µA

mA

nA

Ω

I

min

I

off

Z

KA



1) ∆V

ref

is defined as the difference between the maximum and minimum values obtained over the full temperature range.

∆V

ref

= V

ref max.

- V

ref min.

V

ref max.

V

ref min.

T1

T2

Temperature

∆V

KA

-

2) The dynamic Impedance is definied as

ZKA =

----------------

∆I

K

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