TLC5960

R

S

D1

G1

S1

V

LED

D2

G2

S2

I

=

LED

V

REF

R

S

R

S

D1

G1

S1

V

0.6VTYP

REF

VREG5

Channel1

I

B

TLC5960

SBVS147 – SEPTEMBER 2010

www.ti.com

UNUSED DRIVER OUTPUT CONNECTION

Figure 27 shows the recommended connection when not all eight channels are needed. Basically, Dn should be

connected to the adjacent pin of the corresponding D terminal in order to prevent the TLC5960 protection routine

from activating these unneeded output pins. The Gn and Sn pins should be tied together.

Figure 27. Unused Driver Output Recommended Connection

BIPOLAR DRIVE CAPABILITY

The TLC5960 integrated driver is designed to work with not only FETs, but also with bipolar devices, as shown in

Figure 28. In this case, the amount of the base current must be considered when you define the LED current.

The amount of base current is deducted from the LED current, based on Equation 17. The output current

(17)

Figure 28. Bipolar Output Capability

24

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