TLC5971 Datasheet, PDF (4/37 Pages) Texas Instruments – 12-Channel 16-Bit, Enhanced Spectrum PWM, RGB LED Driver with 3.3-V Linear Regulator

TLC5971
SBVS146 – AUGUST 2010
RECOMMENDED OPERATING CONDITIONS
At T_A = –40°C to +85°C, and VCC = 6 V to 17 V or VCC = VREG = 3 V to 5.5 V, unless otherwise noted.
TLC5971
MIN
NOM
MAX
DC CHARACTERISTICS
VCC
Supply voltage, internal voltage regulator used
6
17
VREG
Supply voltage, VREG connected to VCC
3
3.3
5.5
V_O
Voltage applied to output
(OUTR0 to OUTR3, OUTG0 to OUTG3, OUTB0 to OUTB3)
17
V_IH
V_IL
V_IHYS
I_OH
I_OL
I_OLC
High-level input voltage (SDTI, SCKI)
Low-level input voltage (SDTI, SCKI)
Input voltage hysteresis (SDTI, SCKI)
High-level output current (SDTO)
Low-level output current (SDTO)
Constant output sink current
(OUTR0 to OUTR3, OUTG0 to OUTG3, OUTB0 to OUTB3)
0.7 × VREG
GND
0.2 × VREG
VREG
0.3 × VREG
–2
2
60
I_REG
Voltage regulator output current (VREG)
T_A
Operating free temperature range
T_J
Operating junction temperature
AC CHARACTERISTICS
–25
–40
+85
–40
+125
f_{CLK (SCKI)}
Data clock frequency and GS control clock frequency, SCKI
0.007
20
t_WH/t_WL
Pulse duration, SCKI
10
t_SU
Setup time, SDTI – SCKI↑
5
t_H
Hold time, SDTI – SCKI↑
3
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UNIT
V
V
V
V
V
V
mA
mA
mA
mA
°C
°C
MHz
ns
ns
ns
ELECTRICAL CHARACTERISTICS
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
V_OH
V_OL
I_I
I_CC
I_CC1
I_CC2
I_CC3
I_OLC
I_OLKG
ΔI_OLC
High-level output voltage, SDTO/SCKO
Low-level output voltage, SDTO/SCKO
Input current, SDTI/SCKI
Supply current
Constant output current, OUTXn
Leakage output current, OUTXn
Constant-current error⁽¹⁾
(channel-to-channel in same color group),
OUTXn
I_OH = –2 mA
I_OL = 2 mA
V_I = VREG or GND
SDTI/SCKI = low, BLANK = 1, GSn = FFFFh,
BCX = 7Fh, V_OUTXn = 1 V, R_IREF = 24 kΩ (I_OLCMax = 2 mA)
SDTI/SCKI = low, BLANK = 1, GSn = FFFFh,
BCX = 7Fh, V_OUTXn = 1 V, R_IREF = 1.6 kΩ (I_OLCMax = 30 mA)
SDTI = 10 MHz, SCKI = 20 MHz, BLANK = 0,
auto repeat enable, external GS clock selected, GSn = FFFFh,
BCX = 7Fh, V_OUTXn = 1 V, R_IREF = 1.6 kΩ (I_OLCMax = 30 mA)
SDTI = 10 MHz, SCKI = 20 MHz, BLANK = 0,
auto repeat enable, external GS clock selected, GSn = FFFFh,
BCX = 7Fh, V_OUTXn = 1 V, R_IREF = 0.82 kΩ (I_OLCMax = 60 mA)
All OUTXn on, BCX = 7Fh, V_OUTXn = 1 V,
V_OUTfix = 1 V, R_IREF = 0.82 kΩ (I_OLCMax = 60 mA)
All OUTXn on, BCX = 7Fh, V_OUTXn = 17 V,
V_OUTfix = 17 V, R_IREF = 0.82 kΩ (I_OLCMax = 60 mA)
All OUTXn on, BCX = 7Fh, V_OUTXn = V_OUTfix = 1 V,
R_IREF = 0.82 kΩ (I_OLCMax = 60 mA)
VREG – 0.4
0
–1
56.3
VREG
V
0.4
V
1
µA
2
4
mA
6
9
mA
14
22
mA
21
36
mA
60.5
64.7
mA
0.1
µA
±1
±3
%
(1) The deviation of each output in the same color group (OUTR0-OUTR3 or OUTG0-OUTG3 or OUTB0-OUTB3) from the average current
from the same color group. Deviation is calculated by the formula:
D (%) =
I_OLCXn
- 1 ´ 100
(I_OLCX0 + I_OLCX1 + I_OLCX2 + I_OLCX3)
4
Where: X = R/G/B, and n = 0-3
4
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