LL431 datasheet(3/5 Pages) UTC

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LL431

LINEAR INTEGRATED CIRCUIT

NISONICTECHNOLOGIESCO.,LTD

3 of 5

www.unisonic.com.tw

QW-R121-020.I



ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)

PARAMETER

SYMBOL

RATINGS

UNIT

Cathode Voltage

VKA

Cathode Current Range(Continuous)

IKA

-100 ~ +150

Reference Input Current

IREF

-0.05 ~ +10

SOT-89

500

SOT-23-3/SOT-23

SOT-25

300

SOP-8

600

Power Dissipation

TO-92

770

Junction Temperature

+150

C

Operating Temperature

TOPR

-40 ~ +85

C

Storage Temperature

TSTG

-65 ~ +150

C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

Cathode Voltage

VKA

VREF ~ 36

Cathode Current

IKA

1 ~ 100



ELECTRICAL CHARACTERISTICS (TC= 25℃, unless otherwise specified.)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX UNIT

LL431-A

2.483 2.495 2.507

LL431-1

2.470 2.495 2.520

LL431-2

2.520

2.545

Reference Input Voltage

VREF

VKA=VREF,IKA=10mA

LL431-3

2.445

2.470

Deviation of reference Input Voltage

Over temperature

VREF/T

VKA=VREF,IKA=10mA

C≦TA≦70C

4.5

VKA=10V~VREF

-1.0

-2.7

Ratio of Change in Reference Input

Voltage to the Change in Cathode Voltage

VREF/VKA IKA=10mA

VKA=36V~10V

-0.5

-2.0

mV/V

Reference Input Current

IREF

IKA=10mA, R1=10k, R2=

1.5

μA

Deviation of Reference Input Current Over

Full Temperature Range

IREF/T

IKA=10mA, R1=10k, R2=

TA =full Temperature

0.4

1.2

μA

Minimum Cathode Current for Regulation

IKA(MIN)

VKA=VREF

100

μA

Off-State Cathode Current

IKA(OFF)

VKA=36V, VREF=0

0.05

1.0

μA

Dynamic Impedance

ZKA

VKA=VREF, IKA=1 to 100mA

1.0kHz

0.5

Ω

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