TLC59284 Datasheet, PDF (4/23 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with Switching Delay

TLC59284
SBVS208A – OCTOBER 2012 – REVISED OCTOBER 2012
www.ti.com
ELECTRICAL CHARACTERISTICS
All minimum and maximum specifications are at T_A = –40°C to +85°C and V_CC = 3 V to 5.5 V, unless otherwise noted.
Typical specifications are at T_A = +25°C and V_CC = 3.3 V.
TLC59284
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_OH
V_OL
V_IREF
I_IN
I_CC0
I_CC1
I_CC2
I_CC3
I_OLC
High
Output voltage
Low
Reference voltage output
Input current
Supply current (V_CC)
Constant output current
I_OLKG0 Output leakage current
ΔI_OLC0
ΔI_OLC1
ΔI_OLC2
ΔI_OLC3
R_PUP
R_PDWN
Constant-
current error
Channel-to-
channel ⁽¹⁾
Device-to-
device ⁽²⁾
Line regulation⁽³⁾
Load regulation⁽⁴⁾
Resistor
Pull-up
Pull-down
I_OH = –2 mA at SOUT
I_OL = 2 mA at SOUT
R_IREF = 1.5 kΩ, T_A = +25°C
V_IN = V_CC or GND at SIN and SCLK
SIN, SCLK, LAT = GND, BLANK = V_OUTn = V_CC, R_IREF = open
SIN, SCLK, LAT = GND, BLANK = V_OUTn = V_CC,
R_IREF = 3 kΩ (I_OUT = 17.6 mA target)
All OUTn = ON, SIN, SCLK, LAT, BLANK = GND,
V_OUTn = 0.8 V, R_IREF = 3 kΩ
All OUTn = ON, SIN, SCLK, LAT, BLANK = GND,
V_OUTn = 0.8 V, R_IREF = 1.5 kΩ (I_OUT = 35.3 mA target)
All OUTn = ON, V_OUTn = V_OUTfix = 0.8 V, R_IREF = 1.5 kΩ,
T_A = +25°C (see Figure 8)
All OUTn = OFF, V_OUTn = V_OUTfix = 10 V,
BLANK = V_CC, R_IREF = 1.5 kΩ (see Figure 8)
T_J = +25°C
T_J = +85°C
T_J = +125°C
All OUTn = ON, V_OUTn = V_OUTfix = 0.8 V, R_IREF = 1.5 kΩ,
T_A = +25°C (see Figure 8)
All OUTn = ON, V_OUTn = V_OUTfix = 0.8 V, R_IREF = 1.5 kΩ,
T_A = +25°C (see Figure 8)
All OUTn = ON, V_OUTn = V_OUTfix = 0.8 V, R_IREF = 1.5 kΩ,
V_CC = 3 V to 5.5 V
All OUTn = ON, V_OUTn = 0.8 V to 3 V, V_OUTfix = 0.8 V,
R_IREF = 1.5 kΩ
BLANK
LAT
V_CC – 0.4
–1
32.9
250
250
1.208
1
3
7
8
35.3
0.07
±1.4
±2
±0.05
±0.5
500
500
V_CC
V
0.4
V
V
1
μA
2 mA
4 mA
9 mA
11 mA
37.7 mA
0.1
μA
0.2
μA
0.5
μA
±3
%
±4
%
±1 %/V
±1 %/V
750
kΩ
750
kΩ
(1) The deviation of each output from the average of OUT0 to OUT15 constant-current. Deviation is calculated by the formula:
D (%) =
I_OUTn
- 1 ´ 100
(I_OUT0 + I_OUT1 + ... + I_OUT14 + I_OUT15)
16
(2) The deviation of the OUT0 to OUT15 constant-current average from the ideal constant-current value.
Deviation is calculated by the following formula:
D (%) =
(I_OUT0 + I_OUT1 + ... I_OUT14 + I_OUT15)
- (Ideal Output Current)
16
Ideal Output Current
´ 100
Ideal current is calculated by the formula:
1.208 V
I_OUT(IDEAL) = 43.8 ´ _RIREF
(3) Line regulation is calculated by this equation:
D (%/V) =
(I_OUTn at V_CC = 5.5 V) - (I_OUTn at V_CC = 3 V)
(I_OUTn at V_CC = 3 V)
100
´
5.5 V - 3 V
(4) Load regulation is calculated by the equation:
D (%/V) =
(I_OUTn at V_OUTn = 3 V) - (I_OUTn at V_OUTn = 1 V)
(I_OUTn at V_OUTn = 1 V)
100
´
3V-1V
4
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