TLC5971 Datasheet, PDF (5/37 Pages) Texas Instruments – 12-Channel 16-Bit, Enhanced Spectrum PWM, RGB LED Driver with 3.3-V Linear Regulator

TLC5971
www.ti.com
SBVS146 – AUGUST 2010
ELECTRICAL CHARACTERISTICS (continued)
At T_A = –40°C to +85°C, V_CC = 6 V to 17 V or VCC = VREG = 3 V to 5.5 V, VLED = 5 V, and C_VREG = 1 µF, unless otherwise
noted. Typical values are at T_A = +25°C and VCC = 12 V.
TLC5971
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ΔI_OLC1
Constant current error⁽²⁾
(device-to-device in same color group),
OUTXn
All OUTXn on, BCX = 7Fh, V_OUTXn = V_OUTfix = 1V,
R_IREF = 0.82 kΩ (I_OLCMax = 60 mA), at same grouped color output
of OUTR0-3, OUTG0-3, and OUTB0-3
±1
±4
%
ΔI_OLC2
ΔI_OLC3
T_TSD
T_HYS
V_IREF
V_REG
ΔV_REG
ΔV_REG1
V_STR
V_HYS
Line regulation of constant-current output,
OUTXn ⁽³⁾
Load regulation of constant-current output,
OUTXn ⁽⁴⁾
Thermal shutdown temperature
Thermal shutdown hysteresis
Reference voltage output, IREF
Linear regulator output voltage, VREG
Line regulation of linear regulator, VREG
Load regulation of linear regulator, VREG
Undervoltage lockout release, VREG
Undervoltage lockout hysteresis, VREG
All OUTn on, BCX = 7Fh, V_OUTXn = V_OUTfix = 1 V,
R_IREF = 0.82 kΩ (I_OLCMax = 60 mA)
All OUTn on, BCX = 7Fh, V_OUTXn = V_OUTfix = 1 V,
R_IREF = 0.82 kΩ (I_OLCMax = 60 mA)
Junction temperature⁽⁵⁾
Junction temperature⁽⁵⁾
R_IREF = 0.82 kΩ
VCC = 6 V to 17 V, IREG = 0 mA to –25 mA
VCC = 6 V to 17 V, IREG = 0 mA
VCC = 12 V, IREG = 0 mA to –25 mA
±0.5
±1
%/V
±1
±3
%/V
150
165
180
°C
5
10
20
°C
1.18
1.21
1.24
V
3.1
3.3
3.5
V
90
mV
120
mV
2.5
2.7
2.9
V
300
400
500
mV
(2) The deviation of each color group constant-current average from the ideal constant-current value.
Deviation is calculated by the following formula:
D (%) =
(I_OLCX0 + I_OLCX1 + I_OLCX2 + I_OLCX3) _{- (Ideal Output Current)}
4
Ideal Output Current
´ 100
Where: X = R/G/B.
Ideal current is calculated by the following formula for the OUTRn and OUTGn groups:
1.21
I_OLCXn(IDEAL) (mA) = 41 ´ _{RIREF (W)}
Where: X = R/G/B.
(3) Line regulation is calculated by this equation:
(I_OLCXn at VCC = 5.5 V) - (I_OLCXn at VCC = 3 V)
D (%/V) =
(I_OLCXn at VCC = 3 V)
100
´
5.5 V - 3 V
Where: X = R/G/B, n = 0-3.
(4) Load regulation is calculated by the equation:
D (%/V) =
(I_OLCXn at V_OUTXn = 3 V) - (I_OLCXn at V_OUTXn = 1 V)
(I_OLCXn at V_OUTXn = 1 V)
100
´
3V-1V
Where: X = R/G/B, n = 0-3.
(5) Not tested, specified by design.
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