TLC5929 Datasheet, PDF (4/36 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with 7-Bit Global Brightness Control, Power-Save Mode

TLC5929
SBVS159 – APRIL 2011
www.ti.com
ELECTRICAL CHARACTERISTICS
At V_CC = 3 V to 5.5 V and T_A = –40°C to +85°C. Typical values at V_CC = 3.3 V and T_A = +25°C, unless otherwise noted.
TLC5929
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_OH
V_OL
V_LOD
V_LSD0
V_LSD1
V_LSD2
V_LSD3
V_IREF
I_IN
I_CC0
I_CC1
I_CC2
I_CC3
I_CC4
I_CC5
High-level output voltage
Low-level output voltage
LED open detection threshold
LED short detection threshold
Reference voltage output
Input current
Supply current (V_CC)
I_OH = –2 mA at SOUT
I_OL = 2 mA at SOUT
All OUTn = on
All OUTn = on, detection voltage code = 0h
All OUTn = on, detection voltage code = 1h
All OUTn = on, detection voltage code = 2h
All OUTn = on, detection voltage code = 3h
R_IREF = 1.3 kΩ
V_IN = V_CC or GND at SIN, SCLK, LAT, and BLANK
SIN/SCLK/LAT = low, BLANK = high, all OUTn = off,
V_OUTn = 0.8 V, BC = 7Fh, R_IREF = open
SIN/SCLK/LAT = low, BLANK = high, all OUTn = off,
V_OUTn = 0.8 V, BC = 7Fh, R_IREF = 3.6 kΩ
(I_OUT = 18.3 mA target)
SIN/SCLK/LAT/BLANK = low, All OUTn = on,
V_OUTn = 0.8 V, BC = 7Fh, R_IREF = 3.6 kΩ
(I_OUT = 18.3 mA target)
SIN/SCLK/LAT/BLANK = low, All OUTn = on,
V_OUTn = 0.8 V, BC = 7Fh, R_IREF = 1.6 kΩ
(I_OUT = 41.3 mA target)
V_CC = 5.0 V, SIN/SCLK/LAT/BLANK = low,
All OUTn = on, V_OUTn = 0.8 V, BC = 7Fh,
R_IREF = 1.3 kΩ (I_OUT = 50.8 mA target)
V_CC = 5.0 V, SIN/SCLK/LAT/BLANK = low,
All OUTn = on, V_OUTn = 0.8 V, BC = 7Fh, R_IREF = 1.3
kΩ (I_OUT = 50.8 mA target), all output data off with
power-save mode enabled
V_CC – 0.4
V_CC
V
0.4
V
0.25
0.30
0.35
V
0.32 × V_CC 0.35 × V_CC 0.38 × V_CC
V
0.42 × V_CC 0.45 × V_CC 0.48 × V_CC
V
0.52 × V_CC 0.55 × V_CC 0.58 × V_CC
V
0.62 × V_CC 0.65 × V_CC 0.68 × V_CC
V
1.175
1.205
1.235
V
–1
1
μA
2
3
mA
5
7
mA
5
7
mA
9
11
mA
11
14
mA
10
40
µA
I_OLC0
I_OLC1
I_OLKG0
I_OLKG1
I_OLKG2
ΔI_OLC0
Constant output sink current
(OUT0 to OUT15, see Figure 3)
Output leakage current
(OUT0 to OUT15, see Figure 3)
Constant-current error
(channel-to-channel, OUT0 to
OUT15) ⁽²⁾
All OUTn = on, V_OUTn = V_OUTfix = 0.8 V, BC = 7Fh,
R_IREF = 1.6 kΩ
V_CC = 5.0 V, All OUTn = on, V_OUTn = V_OUTfix = 1 V,
BC = 7Fh, R_IREF = 1.3 kΩ
BLANK = high, V_OUTn = V_OUTfix =
10 V, R_IREF = 1.6 kΩ
T_J = +25°C
T_J = +85°C⁽¹⁾
T_J = +125°C⁽¹⁾
All OUTn = on, V_OUTn = V_OUTfix = 0.8 V, BC = 7Fh,
R_IREF = 1.6 kΩ, T_A = +25°C
38.5
41.3
44.1
mA
47.3
50.8
54.3
mA
0.1
μA
0.2
μA
0.3
0.8
μA
±1
±3
%
ΔI_OLC1
Constant-current error
(device-to-devicel, OUT0 to
OUT15) ⁽³⁾
All OUTn = on, V_OUTn = V_OUTfix = 0.8 V, BC = 7Fh,
R_IREF = 1.6 kΩ, T_A = +25°C
±2
±4
%
(1) Not tested; specified by design.
(2) The deviation of each output from the average of OUT0 to OUT15 constant-current. Deviation is calculated by the formula:
(%) = 100
D
´
I_OLC(n)
1
-
(I_OLC(0) + I_OLC(1) + ... + I_OLC(14) + I_OLC(15))
16
.
(3) The deviation of the OUT0 to OUT15 constant-current average from the ideal constant-current value. Deviation is calculated by the
formula:
(%) = 100
D
´
(I_OLC(0) + I_OLC(1) + ... I_OLC(14) + I_OLC(15))
(Ideal Output Current)
-
16
Ideal Output Current
Ideal current is calculated by the formula:
I_OLC(IDEAL) = 54.8 ´
1.205
R_IREF
4
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