LH1549AB/ AAC/ AACTR

Document Number 83840

Rev. 1.3, 26-Oct-03

Vishay Semiconductors

www.vishay.com

3

Optocoupler Input

Optocoupler Output

Optocoupler Transfer

Typical Characteristics (Tamb = 25

°C unless otherwise specified)

Parameter

Test condition

Symbol

Min

Typ.

Max

Unit

LED forward voltage

0.9

1.2

1.5

V

Parameter

Test condition

Symbol

Min

Typ.

Max

Unit

Saturation voltage

0.7

0.5

V

Collector-emitter leakage

current

500

nA

Trickle current leakage

1.0

µA

Parameter

Test condition

Symbol

Min

Typ.

Max

Unit

DC Current Transfer Ratio

33

165

%

Figure 1. LED Voltage vs. Temperature

Figure 2. Current Limit vs. Temperature

ilh1549ab_01

Ambient Temperature (°C)

-40

-20

0

20

40

1.6

1.5

1.4

1.3

1.2

1.1

1.0

IF =50mA

60

80

IF =10mA

IF = 2.0 mA

IF = 5.0 mA

IF =20mA

ilh1549ab_02

-40

40

10

30

20

0

-20

-10

-40

-30

-20

0

20

40

60

Ambient Temperature (°C)

80

IF = 5.0 mA

t = 5.0 ms

VL = SEE ELEC. CHAR.

Figure 3. LED Current for Switch Turn-on vs. Temperature

ilh1549ab_03

Ambient Temperature (°C)

100

-60

80

60

40

-40

-40

20

-20

0

-20

0

20

40

60

80

IL = 100 mA