D

(%)=

-

1

(I

+I

+I

)

OUTR0

7

OUTG0

7

OUTB0

7

+

+I

+

+I

+

+I

¼

¼

¼

OUTR

OUTG

OUTB

24

´

100

(I

+I

+...+I

)

OUTX0

OUTX1

8

D

(%)=

IdealOutputCurrent

-

(IdealOutputCurrent)

(I

+

+

+I

+I

)

OUTR0

OUTG0

OUTB0

¼

I

+

+I

+

+I

OUTR7

OUTG7

OUTB7

¼

¼

24

´

100

I

=40 ´

OUT(IDEAL, mA)

1.20

R

( )

W

IREF

100

(I

atV

=3.0V)

OUTXn

CC

(I

atV

=5.5V)

(I

atV

=3.0V)

OUTXn

CC

OUTXn

CC

-

5.5V

3V

-

D (%/V)=

´

100

3V

1V

-

´

(I

atV

=1V)

OUTXn

OUTXn

(I

atV

=3V)

(I

atV

=1V)

-

OUTXn

OUTXn

OUTXn

OUTXn

D (%/V)=

TLC5951

www.ti.com

SBVS127B – MARCH 2009 – REVISED DECEMBER 2009

ELECTRICAL CHARACTERISTICS (continued)

TLC5951

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

At OUTR0-OUTR7, OUTG0-OUTG7 and OUTB0-OUTB7,

All OUTRn/Gn/Bn = on, BCR/G/B = FFh,

(color group to color

DCRn/Gn/Bn = 7Fh with DC high adjustment range,

±1

±3

%

group in same device)

At OUTR0-OUTR7, OUTG0-OUTG7 and OUTB0-OUTB7,

All OUTRn/Gn/Bn = on, BCR/G/B = FFh,

DCRn/Gn/Bn = 7Fh with DC high adjustment range,

±1

±6

%

(device to device)

At OUTR0-OUTR7, OUTG0-OUTG7 and OUTB0-OUTB7,

All OUTRn/Gn/Bn = on, BCR/G/B = FFh,

DCRn/Gn/Bn = 7Fh with DC high adjustment range,

±0.5

±2

%/V

At OUTR0-OUTR7, OUTG0-OUTG7 and OUTB0-OUTB7,

All OUTRn/Gn/Bn = on, BCR/G/B = FFh,

DCRn/Gn/Bn = 7Fh with DC high adjustment range,

±1

±3

%/V

Thermal error flag

Junction temperature

150

163

175

°C

Thermal error flag

Junction temperature

5

10

20

°C

LED open detection

All OUTRn/Gn/Bn = on

0.20

0.25

0.30

V

threshold

LED short detection

All OUTRn/Gn/Bn = on

2.4

2.5

2.6

V

threshold

Reference voltage output

1.17

1.20

1.23

V

Pull-down resistor

At XBLNK, GSSIN

250

500

750

k

Ω

(2)

The deviation of each color group in the same device from the average of all constant current. The deviation is calculated by the formula

(X = R, G, or B):

(3)

The deviation of the all constant-current average from the ideal constant-current value. The deviation is calculated by the formula:

Ideal current is calculated by the following equation:

(4)

Line regulation is calculated by the following equation (X = R, G, or B; n = 0-7):

(5)

Load regulation is calculated by the following equation (X = R, G, or B; n = 0-7):

(6)

Not tested; specified by design.

Copyright © 2009, Texas Instruments Incorporated

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