TLC5951 Datasheet, PDF (4/46 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction and 3-Group, 8-Bit Global Brightness Control

TLC5951
SBVS127B – MARCH 2009 – REVISED DECEMBER 2009
www.ti.com
ELECTRICAL CHARACTERISTICS
At T_A = –40°C to +85°C, V_CC = 3 V to 5.5 V, and V_LED = 5 V, unless otherwise noted. Typical values are at T_A = +25°C and
V_CC = 3.3 V.
TLC5951
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_OH
V_OL
I_I
I_CC1
I_CC2
I_CC3
I_CC4
I_OLC
I_OLKG
ΔI_OLC
High level output voltage
Low level output voltage
Input current
Supply current
Constant output current
Leakage output current
Constant-current error⁽¹⁾
(channel-to-channel in
same color group)
At GSSOUT, DCSOUT, I_OH = –1 mA
At GSSOUT, DCSOUT, I_OL = 1 mA
At GSSCK, GSLAT, DCSIN, DCSCK, GSCKR/G/B with V_I = V_CC,
At GSSIN, GSSCK, GSLAT, DCSIN, XBLNK, DCSCK,
GSCKR/G/B with V_I = GND
GSSIN, GSSCK, GSLAT, DCSIN, DCSCK = low, XBLNK = low,
GSCKR/G/B = low, V_OUTRn/Gn/Bn = 1 V, BCR/G/B = FFh,
DCRn/Gn/Bn = 7Fh with DC high adjustment range,
R_IREF = 24 kΩ (I_OUTRn/Gn/Bn = 2 mA target)
GSSIN, GSSCK, GSLAT, DCSIN, DCSCK = low, XBLNK = low,
GSCKR/G/B = low, V_OUTRn/Gn/Bn = 1 V, BCR/G/B = FFh,
DCRn/Gn/Bn = 7Fh with DC high adjustment range,
R_IREF = 2.4 kΩ (I_OUTRn/Gn/Bn = 20 mA target)
GSSIN, GSSCK, GSLAT, DCSIN, DCSCK = low, XBLNK = high,
GSCKR/G/B = 33 MHz, V_OUTRn/Gn/Bn = 1 V,
GSRn/Gn/Bn = FFFh, BCR/G/B = FFh,
DCRn/Gn/Bn = 7Fh with DC high adjustment range,
R_IREF = 2.4 kΩ (I_OUTRn/Gn/Bn = 20 mA target), auto repeat on
GSSIN, GSSCK, GSLAT, DCSIN, DCSCK = low, XBLNK = high,
GSCKR/G/B = 33 MHz, V_OUTRn/Gn/Bn = 1 V,
GSRn/Gn/Bn = FFFh, BCR/G/B = FFh,
DCRn/Gn/Bn = 7Fh with DC high adjustment range,
R_IREF = 1.2 kΩ (I_OUTRn/Gn/Bn = 40 mA target), auto repeat on
At OUTR0-OUTR7, OUTG0-OUTG7, OUTB0-OUTB7,
All OUTRn/Gn/Bn = on, BCR/G/B = FFh,
DCRn/Gn/Bn = 7Fh with DC high adjustment range,
V_OUTRn/Gn/Bn = 1 V, V_OUTfix = 1 V,
R_IREF = 1.2 kΩ (I_OUTRn/Gn/Bn = 40 mA target)
At OUTR0-OUTR7, OUTG0-OUTG7 and OUTB0-OUTB7,
XBLNK = low, V_OUTRn/Gn/Bn = V_OUTfix = 15 V, R_IREF = 1.2 kΩ
At OUTR0-OUTR7, OUTG0-OUTG7 and OUTB0-OUTB7,
All OUTRn/Gn/Bn = on, BCR/G/B = FFh,
DCRn/Gn/Bn = 7Fh with DC high adjustment range,
V_OUTRn/Gn/Bn = 1 V, V_OUTfix = 1 V,
R_IREF = 1.2 kΩ (I_OUTRn/Gn/Bn = 40 mA target)
V_CC – 0.4
–1
35
1
6
12
21
40
±1.5
V_CC
V
0.4
V
1
μA
3 mA
10 mA
27 mA
55 mA
45 mA
0.1
μA
±4
%
(1) The deviation of each output in the same color group from the average of the same color group (OUTR0-OUTR7, OUTG0-OUTG7, or
OUTB0-OUTB7) constant current. The deviation is calculated by the formula (X = R, G, or B; n = 0-7):
D (%) =
I_OUTXn (N = 0-7)
- 1 ´ 100
(I_OUTX0 + I_OUTX1 + ... + I_OUTX6 + I_OUTX7)
8
4
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