TLC5946_16 Datasheet, PDF (4/41 Pages) Texas Instruments – 16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction

TLC5946
SLVS824B – MARCH 2008 – REVISED JUNE 2008 .......................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS
At V_CC = 3.0 V to 5.5 V, T_A = –40°C to +85°C, and R_IREF = 1.3kΩ. Typical values at V_CC = 3.3 V and T_A = +25°C, unless
otherwise noted.
V_OH
V_OL
I_IN
I_CC1
I_CC2
I_CC3
I_CC4
I_OLC
I_OLK1
I_OLK2
ΔI_OLC
ΔI_OLC1
ΔI_OLC2
ΔI_OLC3
T_TEF
T_HYS
V_LOD
V_IREF
PARAMETER
High-level output voltage
Low-level output voltage
Input current
Supply current
Constant output current
Output leakage current
Output leakage current
Constant current error
(channel-to-channel) ⁽¹⁾
Constant current error
(device-to-device) ⁽²⁾
Line regulation⁽³⁾
Load regulation⁽⁴⁾
Thermal error flag threshold
Thermal error hysteresis
LED open detection threshold
Reference voltage output
TEST CONDITIONS
I_OH = –1 mA at SOUT
I_OL = 1 mA at SOUT
I_OL = 5 mA at XERR
V_IN = V_CC or GND at BLANK, XHALF, GSCLK, SCLK,
SIN, XLAT, and MODE pins
No data transfer, all OUTn = OFF, V_OUTn = 1 V,
DCn = 3Fh, R_IREF = 13 kΩ
No data transfer, all OUTn = OFF, V_OUTn = 1 V,
DCn = 3Fh, R_IREF = 2.7 kΩ
Data transfer at 30 MHz, all OUTn = ON, V_OUTn = 1 V,
DCn = 3Fh, R_IREF = 2.7 kΩ
Data transfer at 30 MHz, all OUTn = ON, V_OUTn = 1 V,
DCn = 3Fh
All OUTn = ON, V_OUTn = 1 V, V_OUTfix = 1 V, DCn = 3Fh
All OUTn = OFF, V_OUTn = 17 V, DCn = 3Fh
At OUT0 to OUT15
No error condition, V_XERR = 5.5 V, at XERR
All OUTn = ON, V_OUTn = 1 V, V_OUTfix = 1 V, DCn = 3Fh
All OUTn = ON, V_OUTn = 1 V, V_OUTfix = 1 V, DCn = 3Fh
All OUTn = ON, V_OUTn = 1 V, V_OUTfix = 1 V,
V_CC = 3.0 V to 5.5 V, DCn = 3Fh
All OUTn = ON, V_OUTn = 1 V to 3 V,
V_OUTfix = 1 V, DCn = 3Fh
Junction temperature⁽⁵⁾
Junction temperature⁽⁵⁾
All OUTn = ON
MIN
V_CC – 0.4
TLC5946
TYP
–1
0.9
4
13
20
35.5
39.0
+150
+5
0.2
1.16
±1
±2
±0.5
±1
+162
+10
0.3
1.20
MAX
0.4
0.5
1
3
8
25
45
42.5
0.1
1
±3
±6
±1
±3
+175
+20
0.4
1.24
UNIT
V
V
V
µA
mA
mA
mA
mA
mA
µA
µA
%
%
%
%/V
°C
°C
V
V
(1) The deviation of each output from the average of OUT0–OUT15 constant current. Deviation is calculated by the formula:
(%) =
D
I_OUTn
(I_OUT0 + I_OUT1 + ... + I_OUT15)
1 100
-´
16
.
(2) The deviation of the OUT0–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:
I_OUT(IDEAL) = 42.5 ´
1.20
R_IREF
(3) Line regulation is calculated by this equation:
(I_OUTn at V_CC = 5.5 V) - (I_OUTn at V_CC = 3.0 V)
(%/V) =
D
(I_OUTn at V_CC = 3.0 V)
100
´
5.5 V 3 V
-
(4) Load regulation is calculated by the equation:
(%/V) =
D
(I_OUTn at V_OUTn = 3 V) - (I_OUTn at V_OUTn = 1 V)
(I_OUTn at V_OUTn = 1 V)
100
´
3V 1V
-
(5) Not tested. Specified by design.
4
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