TLC5960

2CHMode

R

S

R

S

DC/DC4

DC/DC3

DC/DC2

DC/DC1

V

LED1

CTRL1

CTRL2

CTRL3

CTRL4

EN

HVM[1:4]

D1

G1

S1

D2

G2

S2

D8

G8

S8

R

[1:4]

HVM

V

[1:4]

HVM

V

LED2

V

LED3

V

LED4

R

S

R

S

D1

G1

S1

D2

G2

S2

D7

G7

S7

D8

G8

S8

Ch1

Ch2

Ch3

Ch4

Ch5

Ch7

Ch8

V (V)

D

Ch6

V

+2.6

DREF

V

1.6

-

DREF

8LED

Strings

TLC5960

8CHMode

R

S

R

S

DC/DC

V

LED

CTRL1

CTRL2

CTRL3

CTRL4

EN

HVM1

D1

G1

S1

D2

G2

S2

D8

G8

S8

R

HVM1

V

HVM1

R

S

R

S

D1

G1

S1

D2

G2

S2

D7

G7

S7

D8

G8

S8

8LED

Strings

Ch1

Ch2

Ch3

Ch4

Ch5

Ch6

Ch8

Ch7

V (V)

D

V

+2.6

DREF

V

1.6

-

DREF

TLC5960

SBVS147 – SEPTEMBER 2010

www.ti.com

Figure 24. HVM 2CH Mode Typical Configuration

Figure 25. HVM 8CH Mode Typical Configuration

On the 4CH mode and 8CH mode, the TLC5960 LED-Short-Detection threshold voltage can be adjusted by

setting the external input voltage to the HVM4 pin. The threshold calculation is shown in Equation 5.

Table 3. HVM Configuration Modes

IN

OUT

HVM LOGIC

MODE

CTRL1

CTRL2

CTRL3

CTRL4

HVM1

HVM2

HVM3

HVM4

2CH

Ch1, 2

Ch3, 4

Ch5, 6

Ch7, 8

Ch1, 2

Ch3, 4

Ch5, 6

Ch7, 8

REFLSD

4CH

Ch1, 2, 5, 6

> 7.0V

Ch3, 4, 7, 8

GND

Ch1, 2, 5, 6

Ch3, 4, 7, 8

N/A

(Input)

REFLSD

8CH

Ch1 to Ch8

> 7.0V

GND

> 7.0V

Ch1 to Ch8

N/A

N/A

(Input)

22

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