TLC5910

LED DRIVER

SLLS392 – NOVEMBER 1999

23

POST OFFICE BOX 655303

PRINCIPLES OF OPERATION

constant output current

0

RIREF – kΩ

10.0

1.0

10

20

30

40

50

60

70

80

0.1

90

Conditions: VOUT = 1.0V, VIREF = 1.21V

I

V

R

38

≅

R

47

I

≅

NOTE: The brightness control and dot corrected value are 100%. The resistor, RIREF, should be located as close to the IREF terminal as possible

to avoid the noise influence.

Figure 11. Current on Constant Current Output vs External Resistor