Diodes AL5812 Manuel d'utilisateur télécharger pdf (Page 5)

AL5812

Document number: DS35616 Rev. 2 - 2

5 of 11

www.diodes.com

November 2013

© Diodes Incorporated

NEW PRODUCT

A

L5812

Typical Performance Characteristics (cont.)

T = +25°C

2 LEDs

R = 7.5k

f = 100Hz

A

SET

PWM

Ω

10 200901008040 5030 7060

DUTY CYCLE (%)

Figure 7 LED Current vs. PWM Duty Cycle

110

100

90

80

70

60

50

40

30

20

10

0

LED

C

U

R

R

EN

T

(mA)

125 160130 155140 145 150135

TEMPERATURE (°C)

Figure 8 LED Current vs. T

SHDN

LED

C

U

R

R

EN

T

(mA)

14

12

10

6

2

-2

8

4

0

T

SHDN

T

HYS

V = 9V

R = 75K

IN

SET

Ω

0 5 10 15 20 25 30 35 40 45 50 55 60

INPUT VOLTAGE (V)

Figure 9 R Voltage vs. Input Voltage

SET

0.500

0.495

0.490

0.485

0.480

0.475

R

V

O

L

T

A

G

E (V)

SET

V = 1.2V

T = +25°C

LED

A

R = 7.5k

SET

Ω

R = 7.5k

SET

Ω

-40 -25 -10 5 20 35 50 65 80 95 110 125

TEMPERATURE (C)

Figure 10 R Voltage vs. Ambient Temperature

SET

0.500

0.495

0.490

0.485

0.480

0.475

R

V

O

L

T

A

G

E (V)

SET

V = 1.2V

V = 3.5V

LED

IN

0 5 10 15 20 25 30 35 40 45 50 55 60

INPUT VOLTAGE (V)

Figure 11 Supply Current vs. Input Voltage

400

350

300

250

200

150

100

50

0

S

U

P

P

L

Y

C

U

R

R

EN

T

(µA)

V = 1.2V

T = +25°C

LED

A

R = 4.99k

SET

Ω

R = 7.5k

SET

Ω

R = 12.4k

SET

Ω

S

U

P

P

L

Y

C

U

R

R

E

N

T

(µA)

350

300

250

200

150

100

50

0

-40 -25 -10 5 20 35 50 65 80 95 110 125

TEMPERATURE (°C)

Figure 12 Supply Current vs. Ambient Temperature

R = 4.99k

SET

Ω

R = 7.5k

SET

Ω

R = 12.4k

SET

Ω

V = 1.2V

V = 3.5V

LED

IN

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