TLC5957 Datasheet, PDF (10/25 Pages) Texas Instruments – TLC5957 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED OPEN Detection and Caterpillar Cancelling

TLC5957
SLVSCQ4 – OCTOBER 2014
8 Parameter Measurement Information
8.1 Pin Equivalent Input and Output Schematic Diagrams
VCC
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V_CC
INPUT
OUTPUT
GND
V_CC
Figure 13. SIN, SCLK
INPUT
GND
Figure 15. LAT, GCLK
8.2 Test Circuit
GND
Figure 14. SOUT
(1) X=R or G or B, n=0~15
(1)
OUTXn
GND
Figure 16. OUTR0/G0/B0 through OUTR15/G15/B15
V_CC
VCC
(2)
OUTXn
GND
R_L
(1)
C_L
V_LED
(1) CL includes measurement probe and jig capacitance.
(2) X=R or G or B, n=0~15
Figure 17. Rise Time and Fall Time Test Circuit for OUTXn
V_CC
VCC
SOUT
GND
C ⁽¹⁾
L
(1) CL includes measurement probe and jig capacitance.
Figure 18. Rise Time and Fall Time Test Circuit for SOUT
VCC ^OUTR0
V_CC
(1)
OUTXn
GND ^OUTB15
(1)
VOUTXn
VOUTfix
(1) X=R or G or B, n=0~15
Figure 19. Constant Current Test Circuit for OUTXn
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