Datasheet

ELECTRICAL CHARACTERISTICS
D (%)=
I
OUTn
- 1
(I +I +...+I )
OUT0 OUT1 OUT22
+I
OUT23
24
´ 100
.
D (%)=
IdealOutputCurrent
- (IdealOutputCurrent)
(I +I +...I +I )
OUT0 OUT1 OUT22 OUT23
24
´ 100
I =41 ´
OUT(IDEAL)
1.20
R
IREF
100
(I atV =3.0V)
OUTn CC
(I atV =5.5V) (I atV =3.0V)
OUTn CC OUTn CC
-
5.5V 3V-
D (%/V)=
´
100
3V 1V-
´
(I atV =1V)
OUTn OUTn
(I atV =3V) (I atV =1V)-
OUTn OUTn OUTn OUTn
D (%/V)=
TLC5947
SBVS114A – JULY 2008 – REVISED SEPTEMBER 2008 ................................................................................................................................................. www.ti.com
At V
CC
= 3.0 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.
TLC5947
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
OH
High-level output voltage I
OH
= – 3 mA at SOUT V
CC
– 0.4 V
CC
V
V
OL
Low-level output voltage I
OL
= 3 mA at SOUT 0.4 V
I
IN
Input current V
IN
= V
CC
or GND at SIN, XLAT, and BLANK – 1 1 µ A
SIN/SCLK/XLAT = low, BLANK = high, V
OUTn
= 1 V,
I
CC1
0.5 3 mA
R
IREF
= 24 k Ω
SIN/SCLK/XLAT = low, BLANK = high, V
OUTn
= 1 V,
I
CC2
1 6 mA
R
IREF
= 3.3 k Ω
Supply current (V
CC
)
SIN/SCLK/XLAT = low, BLANK = low, V
OUTn
= 1 V,
I
CC3
15 45 mA
R
IREF
= 3.3 k Ω , GSn = FFFh
SIN/SCLK/XLAT = low, BLANK = low, V
OUTn
= 1 V,
I
CC4
30 90 mA
R
IREF
= 1.6 k Ω , GSn = FFFh
All OUTn = ON, V
OUTn
= 1 V, V
OUTfix
= 1 V,
I
OLC
Constant output current 27.7 30.75 33.8 mA
R
IREF
= 1.6 k Ω
BLANK = high, V
OUTn
= 30 V, R
IREF
= 1.6 k Ω ,
I
OLK
Output leakage current 0.1 µ A
At OUT0 to OUT23
Constant current error All OUTn = ON, V
OUTn
= 1 V, V
OUTfix
= 1 V,
Δ I
OLC
± 2 ± 4 %
(channel-to-channel)
(1)
R
IREF
= 1.6 k Ω , At OUT0 to OUT23
Constant current error All OUTn = ON, V
OUTn
= 1 V, V
OUTfix
= 1 V,
Δ I
OLC1
± 2 ± 7 %
(device-to-device)
(2)
R
IREF
= 1.6 k Ω
All OUTn = ON, V
OUTn
= 1 V, V
OUTfix
= 1 V,
Δ I
OLC2
Line regulation
(3)
± 1 ± 3 %/V
R
IREF
= 1.6 k Ω , At OUT0 to OUT23
All OUTn = ON, V
OUTn
= 1 V to 3 V, V
OUTfix
= 1 V,
Δ I
OLC3
Load regulation
(4)
± 2 ± 6 %/V
R
IREF
= 1.6 k Ω , At OUT0 to OUT23
T
DOWN
Thermal shutdown threshold Junction temperature
(5)
+150 +162 +175 ° C
T
HYS
Thermal error hysteresis Junction temperature
(5)
+5 +10 +20 ° C
V
IREF
Reference voltage output R
IREF
= 1.6 k Ω 1.16 1.20 1.24 V
(1) The deviation of each output from the average of OUT0 – OUT23 constant current. Deviation is calculated by the formula:
(2) The deviation of the OUT0 – OUT23 constant current average from the ideal constant current value.
Deviation is calculated by the following formula:
Ideal current is calculated by the formula:
(3) Line regulation is calculated by this equation:
(4) Load regulation is calculated by the equation:
(5) Not tested. Specified by design.
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