TL431 datasheet(2/6 Pages) HOTCHIP

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TL431(D)

High Accuracy Adjustable Shunt Regulator

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ABSOLUTE MAXIMUM RATINGS

Characteristic

Symbol

Value

Unit

Cathode voltage

VKA

Cathode current range (Continuous)

100

Reference input current range

IREF

0.05 ~ 10

Power dissipation at 25℃:

TO – 92 Package (RJA = 178℃/W)

SOT – 23 Package (RJA = 625℃/W)

0.7

0.2

Junction temperature range

0 ~ 150

℃

Operating temperature range

-40~+125

℃

Storage temperature range

Tstg

-65 ~ +150

℃

RECOMMENDED OPERATING CONDITIONS

C haracteristic

Symbol

Test Condition

Min

Typ

Max

Unit

Cathode voltage

VKA

VREF

Cathode current

IKA

0.5

100

TL431- 0.3% ELECTRICAL CHARACTERISTIC (TA=25℃,unless otherwise specified)

CHARACTERISTIC

SYMBOL

CIR-CUIT

TEST CONDITION

MIN.

TYP.

MAX.

UNIT

Reference input Voltage

VREF

VKA=VREF,IK=10mA

2.487V

2.495V

2.502V

Deviation of reference

Input voltage over

Full temperalure range

△

VREF/△T

VKA=VREF,IK=10mA

TA=Full Range

Ratio of change in

reference Input voltage to

the change in cathod

voltage

△

VREF/△

VKA

IK=10

△

VKA=10V-VREF

-1.4

-2.7

mV/V

△

VKA=36V-10V

-1

-2

Reference input current

IREF

IKA=10mA,R1=10KΩ,R2=∞

1.8

Deviation of rerference

input Current Over Full

Temperature Range

△

IREF/△T

IK=10mA,R1=10KΩ,R2=∞

TA=Full Range

0.4

1.2

Minimum Cathode Current

for regulation

IKAMIN

△

VKA=VREF

0.5

Off-State Cathode Current

IKAOFF

VKA=36V,VREF=0

0.2

Dynamic Impedance

ZKA

VKA=VREF,IK=1mA~100mA,

F≤1KHZ

0.2

0.5

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