LUXEON K2 with TFFC Datasheet DS60 (10/07)

6

Electrical Characteristics

Electrical Characteristics at 1000mA

Table 4.

T

Ty

yp

piic

ca

all T

Te

em

mp

pe

erra

attu

urre

e

T

Ty

yp

piic

ca

all

T

Ty

yp

piic

ca

all

C

Co

oe

effffiic

ciie

en

ntt o

off

T

Th

he

errm

ma

all

D

Dy

yn

na

am

miic

c

F

Fo

orrw

wa

arrd

d

R

Re

es

siis

stta

an

nc

ce

e

F

Fo

orrw

wa

arrd

d V

Vo

olltta

ag

ge

e V

R

Re

es

siis

stta

an

nc

ce

V

Vo

olltta

ag

ge

e

J

Ju

un

nc

cttiio

on

n tto

o

((V

V))

((Ω

Ω))

((m

mV

C))

C

Ca

as

se

C//W

W))

C

Co

ollo

orr

M

Miin

n..

T

Ty

yp

p..

M

Ma

ax

x..

R

R

D

D

ΔΔVV

F

/

ΔΔTT

J

J

R

R

θθ

J

J C

C

CoolWhite

[3]

3.03

3.65

4.71

0.45

2.8

5.5 (9.5 for Star)

Notes for Table 4:

1.

Philips Lumileds maintains a tolerance of ±0.06V on forward voltage measurements

2.

Dynamic resistance is the inverse of the slope in linear forward voltage model for LEDs. See figure 13.

3.

The forward voltage of the LUXEON K2 with TFFC LED will reduce by up to 0.50V at 1000mA during the first few hours of

operation after SMT reflow. Due to this effect, Philips Lumileds recommends current source drive for consistent and reliable

performance. Cross connected series/parallel arrays or voltage drivers which could result in current hogging or variation in

drive current are not recommended. Please consult your Philips Lumileds authorized distributor or Philips Lumileds Sales

Representative for further information.

4.

Luxeon K2 with TFFC is tested and binned at 25°C with a 20ms monopulse test to minimize heating of the junction

or case.

Typical Electrical Characteristics

Junction and Case Temperature = 25ºC

Table 5.

T

Ty

yp

piic

ca

all F

Fo

orrw

wa

arrd

d V

Vo

olltta

ag

ge

e V

V))

C

Co

ollo

orr

a

att 1

15

50

00

0m

mA

A

a

att 7

70

00

0m

mA

A

a

att 3

35

50

0m

mA

A

CoolWhite

3.85

3.5

3.3