TL431 datasheet(3/12 Pages) MICROSEMI

部件名	TL431

功能描述	PRECISION PROGRAMMABLE REFERENCES

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制造商	MICROSEMI [Microsemi Corporation]

网页	http://www.microsemi.com

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P RECISION P ROGRAMMABLE R EFERENCES

TL431/TL431A/TL431B

PRODUCT DA T ABOOK 1996/1997

3

Rev. 1.3

9/99

P RODUCTION D ATA S HEET

ELECTRICAL CHARACTERISTICS (Note 3)

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for TL431C/TL431AC/TL431BC with 0°C

≤ T

A ≤ 70°C,

TL431I/TL431AI/TL431BI with -40°C

≤ T

A ≤ 85°C.)

Parameter

Symbol

Test Conditions

TL431/431A/431B

Units

Min. Typ. Max.

2440 2495 2550

mV

2470 2495 2520

mV

2490 2500 2510

mV

417

mV

530

mV

417

mV

530

mV

415

mV

520

mV

-1.4

-2.7

mV/V

-1.1

-2

mV/V

24

µA

1.5

1.9

µA

2.3

µA

0.4

1

mA

0.1

1

µA

0.1

1

µA

2µA

0.18

0.5

µA

0.2

0.5

Ω

0.1

0.2

Ω

Note 3. These parameters are guaranteed by design.

Note 4.

Ratio of change in reference input voltage

to the change in cathode voltage.

∆V

REF

∆V

KA

Reference Input Voltage

TL431

V

REF

I

K = 10mA, VKA = VREF, TA = 25°C

TL431A

I

K = 10mA, VKA = VREF, TA = 25°C

TL431B

I

K = 10mA, VKA = VREF, TA = 25°C

Reference Drift

TL431C

I

K = 10mA, VKA = VREF

TL431I

I

K = 10mA, VKA = VREF

TL431AC

∆V

REF

I

K = 10mA, VKA = VREF

TL431AI

∆V

KA

I

K = 10mA, VKA = VREF

TL431BC

I

K = 10mA, VKA = VREF

TL431BI

I

K = 10mA, VKA = VREF

Voltage Ratio, Ref to Cathode

TL431, TL431A

I

K = 10mA, VKA = 2.5V to 36V

(Note 4)

TL431B

I

K = 10mA, VKA = 2.5V to 36V

Reference Input Current

TL431,TL431A

I

REF

V

KA = VREF, TA = 25°C

TL431B

V

KA = VREF, TA = 25°C

V

KA = VREF, TA = Operating Range

Minimum Operating Current

I

MIN

V

KA = VREF to 36V

Off-State Cathode Current

TL431

I

OFF

V

KA = VREF to 36V, TA = 25°C

TL431A

V

KA = VREF to 36V, TA = 25°C

TL431B

V

KA = VREF to 36V, TA = Operating Range

V

KA = 36V, VREF = 0V, TA = 25°C

Dynamic Impedance

TL431

| Z

KA |VKA = VREF, IK = 1mA to 100mA, f ≤ 1kHz, TA = 25°C

TL431B

V

KA = VREF, IK = 1mA to 100mA, f ≤ 1kHz, TA = 25°C

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