TLC5952 Datasheet, PDF (10/33 Pages) Texas Instruments – 24-Channel, Constant-Current LED Driver with Global Brightness Control and LED Open-Short Detection

TLC5952
SBVS129 – MAY 2009........................................................................................................................................................................................................ www.ti.com
PARAMETER MEASUREMENT INFORMATION
PIN EQUIVALENT INPUT AND OUTPUT SCHEMATIC DIAGRAMS
V_CC
V_CC
INPUT
SOUT
GND
Figure 1. SIN, SCLK, LAT, BLANK
OUTn
GND
Figure 2. SOUT
TEST CIRCUITS
GND
Figure 3. OUTR0/G0/B0 Through OUTR7/G7/B7
V_CC
IREF
R_IREF
V_CC
OUTXn⁽²⁾
GND
R_L
C_L(1)
V_LED
V_CC
V_CC
SOUT
GND
C_L(1)
(1) C_L includes measurement probe and jig capacitance.
(2) X = R, G, or B; n = 0-7.
Figure 4. Rise Time and Fall Time Test Circuit for
OUTRn/Gn/Bn
(1) C_L includes measurement probe and jig capacitance.
Figure 5. Rise Time and Fall Time Test Circuit for SOUT
V_CC OUTR0
V_CC
IREF
OUTXn⁽¹⁾
R_IREF
GND OUTB7
V_OUTfix
V_OUTRn/Gn/Bn
(1) X = R, G, or B; n = 0-7.
Figure 6. Constant-Current Test Circuit for OUTRn/Gn/Bn
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