TOSHIBA

TB62727FN

Constant current adjustment range ( image )

GRAPH: Current adjustment based on 100%

Note 6 :

* Dot correction function is the current adjustment function of each output.

* The fineness of current value set is 1LSB; about equal to 1.58 %.

* Wide set range (100-0%), with presumed brightness dispersion of LED +/- 20 %.

* We recommend dot correction is set in the center of the range.

And, do +/- 50% range of the re-correction after choosing current with REXT.

* Line A shows the case that 50mA was applied to the standard current.

* Line B shows the case that 25mA and Line C shows the case that 10mA.

* Set range that it is recommended is current value inside the slant line area including the dot correction.

* Dot correction accuracy is not good below 5mA.

Action table 7 - - - Dot current correction rate of the Serial-data of Register-1. (typ.)

Data

LLLLLL

LLLLLH

Ratio of

correction

0%

(Output off)

1.58%

Ratio of a LSB

nearly equal to

1.58 %

HHHHHL

HHHHHH

HLLLLL

98.42%

100%

Initial position

(when supply in)

Note 7 :

This value is typical values.

The actual values contains the error of lower than +/- 1LSB.

The initial values are about 50%.

Set range of Dot Correction(6bit)

0[%](LSB)

100[%](MSB)

to

50

40

30

20

10

0

Iout [ mA ]

5 [mA]

64 Steps

(A)

(B)

2 [mA]

(C)

This point is set current by REXT to Iout formula.

Web: www.marktechopto.com | Email: info@marktechopto.com

Company Headquarters

3 Northway Lane North

Latham, New York 12110

Toll Free: 800.984.5337

Fax: 518.785.4725

California Sales Office:

950 South Coast Drive, Suite 265

Costa Mesa, California 92626

Toll Free: 800.984.5337

Fax: 714.850.9314