TLC5952 Datasheet, PDF (5/33 Pages) Texas Instruments – 24-Channel, Constant-Current LED Driver with Global Brightness Control and LED Open-Short Detection

TLC5952
www.ti.com........................................................................................................................................................................................................ SBVS129 – MAY 2009
ELECTRICAL CHARACTERISTICS (continued)
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.
TLC5952
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
ΔI_OLC2 Line regulation⁽³⁾
ΔI_OLC3 Load regulation⁽⁴⁾
T_TEF
Thermal error flag
threshold
At OUTR0-OUTR7, OUTG0-OUTG7, and OUTB0-OUTB7,
All OUTRn/Gn/Bn = on, BCR/G/B = 7Fh,
V_OUTRn/Gn/Bn = V_OUTfix = 1 V, R_IREF = 1.5 kΩ
At OUTR0-OUTR7, OUTG0-OUTG7, and OUTB0-OUTB7,
All OUTRn/Gn/Bn = on, BCR/G/B = 7Fh,
V_OUTRn/Gn/Bn = 1 V to 3 V, V_OUTfix = 1 V, R_IREF = 1.5 kΩ
Junction temperature⁽⁵⁾
+150
±0.5
±1
+165
±1 %
±3 %/V
+180 °C
T_HYS
Thermal error flag
hysteresis
Junction temperature⁽⁵⁾
5
10
20 °C
V_LOD0
V_LOD1
V_LOD2
V_LOD3
V_LSD0
V_LSD1
V_LSD2
V_LSD3
V_IREF
All OUTRn/Gn/Bn = on, detection voltage select code = 0h
LED open detection
threshold
All OUTRn/Gn/Bn = on, detection voltage select code = 1h
All OUTRn/Gn/Bn = on, detection voltage select code = 2h
All OUTRn/Gn/Bn = on, detection voltage select code = 3h
All OUTRn/Gn/Bn = on, detection voltage select code = 4h
LED short detection
threshold
All OUTRn/Gn/Bn = on, detection voltage select code = 5h
All OUTRn/Gn/Bn = on, detection voltage select code = 6h
All OUTRn/Gn/Bn = on, detection voltage select code = 7h
Reference voltage output R_IREF = 1.5 kΩ
0.25
0.30
0.35 V
0.50
0.60
0.70 V
0.80
0.90
1.00 V
1.10
1.20
1.30 V
0.55 × V_CC
0.60 × V_CC
0.65 × V_CC
V
0.65 × V_CC
0.70 × V_CC
0.75 × V_CC
V
0.75 × V_CC
0.80 × V_CC
0.85 × V_CC
V
0.85 × V_CC
0.90 × V_CC
0.95 × V_CC
V
1.17
1.20
1.23 V
(3) Line regulation is calculated by the following equation (X = R, G, or B; n = 0-7):
D (%/V) =
(I_OUTXn at V_CC = 5.5 V) - (I_OUTXn at V_CC = 3.0 V)
(I_OUTXn at V_CC = 3.0 V)
100
´
5.5 V - 3 V
(4) Load regulation is calculated by the following equation (X = R, G, or B; n = 0-7):
D (%/V) =
(I_OUTXn at V_OUTXn = 3 V) - (I_OUTXn at V_OUTXn = 1 V)
(I_OUTXn at V_OUTXn = 1 V)
100
´
3V-1V
(5) Not tested; specified by design.
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