TL431 datasheet(2/7 Pages) CTC

2 / 7 page

Functional Block Diagram & Symbol

Test Circuits

Electrical Characteristics (T

A=25

oC unless otherwise specified)

Characteristics

Symbol

Test Conditions

Min

Typ

Max

Unit

0.4%

2.49

2.50

2.51

Reference Input Voltage

(Fig1)

0.8%

VREF

VK=VREF, IK=10mA

2.48

2.50

2.52

Deviation of Reference Input Voltage

Over-Temperature

(Fig1)

VREF(dev)

VK=VREF, IK=10mA

Tmin Ta Tmax (-40~+125 )

4.5

IK=10mA,

VK=10V to VREF

1.0

2.7

mV/V

Ratio of Change in Reference Input Voltage

to the Change in Cathode Voltage

(Fig2)

VREF /

IK=10mA,

VK=36V to 10V

0.5

2.0

mV/V

Reference Input Current

(Fig2)

IREF

IK=10mA, R1=10k ,

R2=

0.7

Deviation of Reference Input Current Over

Full Temperature Range

(Fig2)

IREF(dev)

IK=10mA, R1=10k ,

R2= , Ta=-40~+125

0.4

1.2

Minimum Cathode Current for Regulation

(Fig1)

IK(min)

VK=VREF

0.4

1.0

Off-State Cathode Current

(Fig3)

IK(off)

VK=36V, VREF=0

0.05

1.0

Dynamic Output Impedance

(Fig1)

VK=VREF, f 1kHz

IK=1 to 100mA

0.15

0.5

Functional Block Diagram

Symbol

Fig 1. VK=VREF

Fig 2. VK>VREF

Fig 3. Off-State Current

Reference

Anode

Cathode

IREF

VREF

IREF

VREF

Note: VK=VREF (1+R1/R2)+IREFxR1

IOFF

TL431 Series

CTC-IC-0002-VER2.0

2/7

TL431

TL431 Datasheet(PDF) 2 Page - Compact Technology Corp.

TL431 Datasheet(HTML) 2 Page - Compact Technology Corp.

Html Pages

1 2 3 4 5 6 7

Datasheet Download

Link URL