TLC5947 Datasheet, PDF (8/25 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver with

TLC5947
SBVS114 – JULY 2008....................................................................................................................................................................................................... www.ti.com
PARAMETER MEASUREMENT INFORMATION
PIN EQUIVALENT INPUT AND OUTPUT SCHEMATIC DIAGRAMS
VCC
VCC
INPUT
SOUT
GND
Figure 1. SIN, SCLK, XLAT, BLANK
OUTn
GND
Figure 2. SOUT
TEST CIRCUITS
GND
Figure 3. OUT0 Through OUT23
VCC
R_L
V_CC
IREF
OUTn
V_LED
V_CC
R_IREF
GND
C_L
VCC
SOUT
GND
C_L
Figure 4. Rise Time and Fall Time Test Circuit for OUTn
Figure 5. Rise Time and Fall Time Test Circuit for SOUT
VCC OUT0
V_CC
IREF
OUTn
R_IREF
GND OUT23
VOUT_FIX
VOUTn
Figure 6. Constant Current Test Circuit for OUTn
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