I

at V

= 1.0 V

O

OUT

n

n

UT

(I

at V

= 3.0 V)

(I

at V

= 1.0 V)

OUT

OUTn

-

n

n

n

O

OUT

UT

D (%/V) =

´

3.0 V

1.0 V

-

100

I

at V

= 3.0 V

OUT

CC

n

(I

at V

= 5.5 V)

(I

at V

= 3.0 V)

OUT

OUT

CC

n

n

CC

-

D (%/V) =

´

5.5 V

3.0 V

-

100

I

(mA) = 43.4

OUT (IDEAL)

n

´

1.20

R

)

W

D (%) =

Ideal Output Current

- Ideal Output Current

I

+ I

+ I

OUT0

O

1

O

2

UT

UT

3

´ 100

D (%) =

- 1

I

OUTn

I

+ I

+ I

O

0

O

1

O

2

UT

UT

UT

3

´ 100

TLC5973

www.ti.com

SBVS225A – MARCH 2013 – REVISED MAY 2013

ELECTRICAL CHARACTERISTICS

otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

High-level output voltage (SDO)

V

Low-level output voltage (SDO)

0

0.4

V

Reference voltage output

1.18

1.20

1.23

V

5.9

V

3

6

mA

4

7

mA

5

8

mA

5.5

10

mA

Constant output current

31

34

37

mA

(OUT0 to OUT2)

0.1

μA

Output leakage current

(OUT0 to OUT2)

V

0.2

μA

Constant-current error

±0.5%

±3%

Constant-current error

±0.5%

±6%

Line regulation of constant-current

±0.5

±1

%/V

Load regulation of constant-current

±0.5

±1

%/V

Internal pull-down resistance (SDI)

At SDI

1

M

Ω

(1)

The deviation of each output (OUT0 to OUT2) from the constant-current average. Deviation is calculated by the formula:

where n = 0 to 2.

(2)

Deviation of the constant-current average in each color group from the ideal constant-current value. Deviation is calculated by the

formula:

Ideal current is calculated by the formula:

where n = 0 to 2.

(3)

Line regulation is calculated by the formula:

where n = 0 to 2.

(4)

Load regulation is calculated by the equation:

where n = 0 to 2.

Copyright © 2013, Texas Instruments Incorporated

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