TLC5957 Datasheet, PDF (6/25 Pages) Texas Instruments – TLC5957 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED OPEN Detection and Caterpillar Cancelling

TLC5957
SLVSCQ4 – OCTOBER 2014
www.ti.com
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Δ I_OLC0
Constant current error Channel-to-
(OUTx0-15, x = R/G/B) channel⁽¹⁾
All OUTn = on, BC = 0h, CCR/G/B = 08Fh, VOUTn = VOUTfix = 0.6V,
RIREF = 7.5kΩ(1mA target), T_A = +25C, at same color grouped output of
OUTR0-15, OUTG0-15 and OUTB0-15
ΔI_OLC1
Constant current error Device-to-
(OUTx0-15, x = R/G/B) device⁽²⁾
All OUTn = on, BC = 0h, CCR/G/B = 08Fh, VOUTn = VOUTfix = 0.6V,
RIREF = 7.5kΩ(1mA target), T_A = +25C, at same color grouped output of
OUTR0-15, OUTG0-15 and OUTB0-15
Δ I_OLC2
Line regulation⁽³⁾
VCC = 3.0 to 5.5V, All OUTn = on, BC = 0h, CCR/G/B = 08Fh,
VOUTn = VOUTfix = 0.6V, RIREF = 7.5kΩ　(1mA target)
ΔI_OLC3
Load regulation⁽⁴⁾
VCC = 4V, All OUTn = on, BC = 0h, CCR/G/B = 08Fh, VOUTn = 0.6 to 3V,
VOUTfix = 1V, RIREF = 7.5kΩ　(1mA target)
ΔI_OLC4
Constant current error Channel-to-
(OUTx0-15, x = R/G/B) channel⁽¹⁾
All OUTn = on, BC = 7h, CCR/G/B - 1CCh, VOUTn = VOUTfix = 0.6V,
RIREF = 7.5kΩ(25mA target), T_A = +25C, at same color grouped output of
OUTR0-15, OUTG0-15 and OUTB0-15
ΔI_OLC5
Constant current error Device-to-
(OUTx0-15, x = R/G/B) device⁽²⁾
All OUTn = on, BC = 7h, CCR/G/B - 1CCh, VOUTn = VOUTfix = 0.6V,
RIREF = 7.5kΩ(25mA target), T_A = +25C, at same color grouped output of
OUTR0-15, OUTG0-15 and OUTB0-15
ΔI_OLC6
Line regulation⁽³⁾
VCC = 3.0 to 5.5V, All OUTn = on, BC = 7h, CCR/G/B - 1CCh,
VOUTn = VOUTfix = 0.6V, RIREF = 7.5kΩ　(25mA target)
Δ I_OLC7
Load regulation⁽⁴⁾
All OUTn = on, BC = 7h, CCR/G/B - 1CCh, VOUTn = 0.6 to 3V,
VOUTfix = 0.6V, RIREF = 7.5kΩ　(25mA target)
T_TSD
T_HYS
V_ISP(in)
V_ISP(out)
Thermal shutdown threshold
Thermal shutdown hysterisis
I_REF resistor short protection threshold
I_REF resistor short-protection release
threshold
MIN
TYP
MAX UNIT
±1%
±3%
±1%
±2%
±1
±3 %/V
±1
±3 %/V
±1%
±3%
±1%
±3%
±1
±1
160
170
10
0.190
0.330
±3 %/V
±3 %/V
180 °C
°C
V
V
(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
æ
ö
ç
D(%) = _ç
IOUTXn
÷
- 1_÷ ´ 100
ç ^{(IOUTX0 + IOUTX1 + ... + IOUTX14 + IOUTX15)} ÷
è
16
ø
(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) :
æ (IOUTX0 + IOUTX1 + ... + IOUTX15)
ö
ç
- (Ideal Output Current) _÷
D(%) = ç
16
÷ ´ 100
ççè
Ideal Output Current
÷÷ø
Ideal current is calculated by the following equation:
Ideal Output
(mA) =
Gain
´
æ
ççè
VIREF
RIREF (W)
ö
÷÷ø
´
CCR(or
CCG,
CCB) / 511d,
VIREF = 1.209V(Typ), refer to Table 1 for the Gain at chosen BC.
(3) Line regulation is calculated by the following equation. (X = R or G or B, n = 0~15):
D(%
/
V)
=
æ
çè
(IOUTXn
at
VCC = 5.5V )
(IOUTXn at
- (IOUTXn at
VCC = 3.0V
VCC
=
3.0 V )
ö
÷ø
´
100
5.5V -
3V
(4) Load regulation is calculated by the following equation. (X = R or G or B, n = 0~15):
D(%
/
V)
=
æ
çè
(IOUTXn
at
VOUTXn = 3V ) - (IOUTXn
(IOUTXn at VOUTXn =
at
1V
VOUTXn
=
1V )
ö
÷ø
´
100
3V - 1V
6
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