ISD201X, ISD231X, ISD235X

2006-04-04

12

Normalized Luminous Intensity vs. Junction Temperature

When mounted in a 10°C/W socket and operated at Absolute

Maximum Electrical conditions, the display will show an LED

junction rise of 17°C. If T

Under these conditions the following Figure „Max. LED Junction

Temperature vs. Socket Thermal Resistance“ shows that the l

be 75% of its 25°C value.

Max. LED Junction Temperature vs. Socket Thermal

Resistance

Max. Package Power Dissipation, ISD201X

Max. Package Power Dissipation, ISD231X

Max. Package Power Dissipation, ISD235X

IDDG5127

-60

j

T

-40 -20 0 20 40 60 80 100 ˚C 140

10

-1

10

0

10

1

A

T = 25 ˚C

Normalized to:

IDDG5128

0

0

Socket Thermal

n = 20 LEDs, DF = 20%

COL

V

I

= 410 mA

= 5.25 V,

CC

V

= 10 mA

CC

I

j

T

∆

5

10

15

20

25

30

35

40

50

˚C

5 10 15 20 25 30 35 ˚C/W 50

Resistance

IDDG5129

0

A

0

LEDs on per Character

5

10 15 20 25 30 35 40

DF = 20%,

COL

V

I

= 410 mA

= 5.25 V,

CC

V

= 10 mA

CC

I

Dmax

P

W

0.5

1.0

1.5

IDDG5130

0

A

T = 25 ˚C

0

LEDs on per Character

5

10 15 20 25 30 35 40

0.5

1.0

1.5

2.0

DF = 20%,

COL

V

I

= 520 mA

= 5.25 V,

CC

V

= 10 mA

CC

I

Dmax

P

W

IDDG5131

0

A

0

LEDs on per Character

5

1015 2025 303540

DF = 20%,

COL

V

I

= 600 mA

= 5.25 V,

CC

V

= 10 mA

CC

I

Dmax

P

0.5

1.0

1.5

2.0

2.5

3.0

W