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| TLC5955 Datasheet, PDF (12/53 Pages) Texas Instruments – TLC5955 48-Channel, 16-Bit, PWM LED Driver with DC, BC, LED Open-Short Detection, and Internal Current Setting | |||
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TLC5955
SBVS237 â MARCH 2014
7 Parameter Measurement Information
7.1 Terminal-Equivalent Input and Output Schematic Diagrams
VCC
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VCC
INPUT
SOUT
GND
Figure 12. SIN, SCLK, LAT, GSCLK
GND
Figure 13. SOUT
OUTXn(1)
(1) X = R, G, or B; n = 0 to 15.
7.2 Test Circuits
GND
Figure 14. OUTX0 Through OUTX15
VCC
RL
VCC
OUTXn(1)
GND
CL(2)
VLED
(1) X = R, G, or B; n = 0 to 15.
(2) CL includes measurement probe and jig capacitance.
Figure 15. Rise Time and Fall Time Test Circuit
for OUTXn
VCC
VCC
SOUT
GND
CL(1)
(1) CL includes measurement probe and jig capacitance.
Figure 16. Rise Time and Fall Time Test Circuit
for SOUT
VCC
VCC
OUTR0
OUTXn(1)
GND OUTB15
VOUTfix
VOUTXn(1)
(1) X = R, G, or B; n = 0 to 15.
Figure 17. Constant-Current Test Circuit for OUTXn
12
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