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TLC5957 Datasheet(PDF) 6 Page - Texas Instruments

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Part No. TLC5957
Description  TLC5957 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED OPEN Detection and Caterpillar Cancelling
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

TLC5957 Datasheet(HTML) 6 Page - Texas Instruments

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(IOUTXn at VOUTXn
3V )
(IOUTXn at VOUTXn
1V )
100
(% / V )
(IOUTXn at VOUTXn
1V
3V
1V
=
-
=
D
=
´
=
-
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(IOUTXn at VCC
5.5V )
(IOUTXn at VCC
3.0V )
100
(% / V )
(IOUTXn at VCC
3.0V
5.5V
3V
=
-
=
D
=
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V
IREF
Ideal Output (mA )
Gain
CCR(or CCG, CCB) / 511d,
VIREF
1.209V(Typ), refer to Table 1 for the Gain at chosen BC
R
( )
IREF
.
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(
)
IOUTX0
IOUTX1
...
IOUTX15
(Ideal Output Current)
16
(%)
100
Ideal Output Current
+
+
+
-
D
=
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ç
÷
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IOUTXn
(%)
1
100
(IOUTX0
IOUTX1
...
IOUTX14
IOUTX15)
16
D
=
-
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+
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TLC5957
SLVSCQ4 – OCTOBER 2014
www.ti.com
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
All OUTn = on, BC = 0h, CCR/G/B = 08Fh, VOUTn = VOUTfix = 0.6V,
Constant current error
Channel-to-
Δ IOLC0
RIREF = 7.5k
Ω(1mA target), TA = +25C, at same color grouped output of
±1%
±3%
(OUTx0-15, x = R/G/B)
channel
(1)
OUTR0-15, OUTG0-15 and OUTB0-15
All OUTn = on, BC = 0h, CCR/G/B = 08Fh, VOUTn = VOUTfix = 0.6V,
Constant current error
Device-to-
ΔIOLC1
RIREF = 7.5k
Ω(1mA target), TA = +25C, at same color grouped output of
±1%
±2%
(OUTx0-15, x = R/G/B)
device
(2)
OUTR0-15, OUTG0-15 and OUTB0-15
VCC = 3.0 to 5.5V, All OUTn = on, BC = 0h, CCR/G/B = 08Fh,
Δ IOLC2
Line regulation
(3)
±1
±3
%/V
VOUTn = VOUTfix = 0.6V, RIREF = 7.5k
Ω (1mA target)
VCC = 4V, All OUTn = on, BC = 0h, CCR/G/B = 08Fh, VOUTn = 0.6 to 3V,
ΔIOLC3
Load regulation
(4)
±1
±3
%/V
VOUTfix = 1V, RIREF = 7.5k
Ω (1mA target)
All OUTn = on, BC = 7h, CCR/G/B - 1CCh, VOUTn = VOUTfix = 0.6V,
Constant current error
Channel-to-
ΔIOLC4
±1%
±3%
RIREF = 7.5k
Ω(25mA target), TA = +25C, at same color grouped output of
(OUTx0-15, x = R/G/B)
channel
(1)
OUTR0-15, OUTG0-15 and OUTB0-15
All OUTn = on, BC = 7h, CCR/G/B - 1CCh, VOUTn = VOUTfix = 0.6V,
Constant current error
Device-to-
ΔIOLC5
±1%
±3%
RIREF = 7.5k
Ω(25mA target), TA = +25C, at same color grouped output of
(OUTx0-15, x = R/G/B)
device
(2)
OUTR0-15, OUTG0-15 and OUTB0-15
VCC = 3.0 to 5.5V, All OUTn = on, BC = 7h, CCR/G/B - 1CCh,
ΔIOLC6
Line regulation
(3)
±1
±3
%/V
VOUTn = VOUTfix = 0.6V, RIREF = 7.5k
Ω (25mA target)
All OUTn = on, BC = 7h, CCR/G/B - 1CCh, VOUTn = 0.6 to 3V,
Δ IOLC7
Load regulation
(4)
±1
±3
%/V
VOUTfix = 0.6V, RIREF = 7.5k
Ω (25mA target)
TTSD
Thermal shutdown threshold
160
170
180
°C
THYS
Thermal shutdown hysterisis
10
°C
VISP(in)
IREF resistor short protection threshold
0.190
V
IREF resistor short-protection release
VISP(out)
0.330
V
threshold
(1)
The deviation of each outputs in same color group (OUTR0~15 or OUTG0~15 or OUTB0~15) from the average of same color group
constant current. The deviation is calculated by the formula. (X = R or G or B, n = 0~15
(2)
The deviation of the average of constant-current in each color group from the ideal constant-current value. (X = R or G or B) :
Ideal current is calculated by the following equation:
(3)
Line regulation is calculated by the following equation. (X = R or G or B, n = 0~15):
(4)
Load regulation is calculated by the following equation. (X = R or G or B, n = 0~15):
6
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