D (%)=

- 1

I

OUTn

(I

+I

+...+I

+I

)

OUT0

OUT1

OUT15

OUT14

16

´ 100

D (%)=

IdealOutputCurrent

- (IdealOutputCurrent)

(I

+I

+...I

+I

)

OUT0

OUT1

OUT14

OUT15

16

´ 100

I

=42 ´

OUT(IDEAL)

1.20

R

IREF

100

(I

atV

=3.0V)

OUTn

CC

(I

atV

=5.5V)

(I

atV

=3.0V)

OUTn

CC

OUTn

CC

-

5.5V

3V

-

D (%/V)=

´

100

3V

1V

-

´

(I

atV

=1V)

OUTn

OUTn

(I

atV

=3V)

(I

atV

=1V)

-

OUTn

OUTn

OUTn

OUTn

D (%/V)=

.

TLC59281

SBVS139 – JANUARY 2010

www.ti.com

ELECTRICAL CHARACTERISTICS

TLC59281

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

High-level output voltage

V

Low-level output voltage

0

0.4

V

Input current

–1

1

μA

1

2

mA

4.5

8

mA

7

18

mA

16

40

mA

Constant output current

31

34

37

mA

(see Figure 6), at OUT0 to OUT15

All OUTn for constant-current driver, all outputs off

Output leakage current

0.1

μA

(see Figure 6), at OUT0 to OUT15

Constant-current error

±1

±3

%

at OUT0 to OUT15

Constant-current error

±1

±6

%

at OUT0 to OUT15

±0.5

±1

%/V

at OUT0 to OUT15

±1

±3

%/V

Reference voltage output

1.16

1.20

1.24

V

(1)

The deviation of each output from the average of OUT0–OUT15 constant-current. Deviation is calculated by the formula:

(2)

The deviation of the OUT0–OUT15 constant-current average from the ideal constant-current value.

Deviation is calculated by the following formula:

Ideal current is calculated by the formula:

(3)

Line regulation is calculated by this equation:

(4)

Load regulation is calculated by the equation:

4

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