ISD201X datasheet(12/16 Pages) OSRAM

12 / 16 page

ISD201X, ISD231X, ISD235X

2006-04-04

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

A=40°C, then the LED’s TJ will be 57°C.

Under these conditions the following Figure „Max. LED Junction

Temperature vs. Socket Thermal Resistance“ shows that the l

V will

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

-40 -20 0 20 40 60 80 100 ˚C 140

-1

T = 25 ˚C

Normalized to:

IDDG5128

Socket Thermal

n = 20 LEDs, DF = 20%

COL

= 3.5, COL

= 410 mA

= 5.25 V,

= 10 mA

∆

˚C

5 10 15 20 25 30 35 ˚C/W 50

Resistance

P = 0.87 W

IDDG5129

T = 25 ˚C

LEDs on per Character

10 15 20 25 30 35 40

DF = 20%,

COL

= 3.5 V, COL

= 410 mA

= 5.25 V,

= 10 mA

Dmax

0.5

1.0

1.5

IDDG5130

T = 25 ˚C

LEDs on per Character

10 15 20 25 30 35 40

0.5

1.0

1.5

2.0

DF = 20%,

COL

= 3.5 V, COL

= 520 mA

= 5.25 V,

= 10 mA

Dmax

IDDG5131

T = 25 ˚C

LEDs on per Character

1015 2025 303540

DF = 20%,

COL

= 3.5 V, COL

= 600 mA

= 5.25 V,

= 10 mA

Dmax

0.5

1.0

1.5

2.0

2.5

3.0

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