TLC5942 Datasheet, PDF (4/33 Pages) Texas Instruments – 16-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction

TLC5942
SBVS096B – OCTOBER 2007 – REVISED OCTOBER 2007
www.ti.com
ELECTRICAL CHARACTERISTICS
At VCC = 3.0 V to 5.5 V, and T_A = –40°C to +85°C. Typical values at VCC = 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_O(LC)
I_O(LKG)
ΔI_O(LC)
ΔI_O(LC1)
ΔI_O(LC2)
ΔI_O(LC3)
T_(TEF)
T_(HYS)
V_LOD
V_IREF
PARAMETER
High-level output voltage
Low-level output voltage
Input current
Supply current
Constant output current
Leakage output 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 GSSOUT, DCSOUT
I_OL = 1 mA at GSSOUT, DCSOUT
V_IN = VCC or GND at GSSIN, GSSCLK,
XGSLAT, DCSIN, DCSCLK, XDCLAT, BLANK
No data transfer, all OUTn = OFF, DCn = 7Fh,
V_OUTn = 1 V, R_IREF = 10 kΩ
No data transfer, all OUTn = OFF, DCn = 7Fh,
V_OUTn = 1 V, R_IREF = 2 kΩ
Data transfer 30 MHz, all OUTn = ON,
DCn = 7Fh, V_OUTn = 1 V, R_IREF = 2 kΩ
Data transfer 30 MHz, all OUTn = ON,
DCn = 7Fh, V_OUTn = 1 V, R_IREF = 1 kΩ
All OUTn = ON, DCn = 7Fh, V_OUTn = 1 V,
V_OUTfix = 1 V, R_IREF = 1 kΩ
All OUTn = OFF, DCn = 7Fh, V_OUTn = 17 V,
R_IREF = 1 kΩ
All OUTn = ON, DCn = 7Fh, V_OUTn = 1 V,
V_OUTfix = 1 V, R_IREF = 1 kΩ
All OUTn = ON, DCn = 7Fh, V_OUTn = 1 V,
V_OUTfix = 1 V, R_IREF = 1 kΩ
All OUTn = ON, DCn = 7Fh, V_OUTn = 1 V,
V_OUTfix = 1 V, R_IREF = 1 kΩ, VCC = 3 V to 5.5 V
All OUTn = ON, DCn = 7Fh,
V_OUTn = 1 V to 3 V, V_OUTfix = 1 V, R_IREF = 1 kΩ
Junction temperature⁽⁵⁾
Junction temperature⁽⁵⁾
All OUTn = ON
R_IREF = 1 kΩ
MIN
VCC – 0.4
0
–1
43
+150
+5
0.2
1.16
TLC5942
TYP
1
4
14
27
49
±1.5
±3
±1
±1
+162
+10
0.3
1.20
MAX
VCC
0.4
1
UNIT
V
V
µA
3
8
mA
30
50
55 mA
0.1 µA
±5
%
±8
%
±4 %/V
±3 %/V
+175
°C
+20
°C
0.4
V
1.24
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.
D (%) =
(I_OUT0 + I_OUT1 + ... I_OUT14 + I_OUT15)
- (Ideal Output Current)
16
Ideal Output Current
´ 100
Deviation is calculated by the following formula:
I_OUT(IDEAL) = 41 ´
Ideal current is calculated by the formula:
1.20
R_IREF
D (%/V) = ^{(IOUTn at VCC = 5.5 V) - (IOUTn at VCC = 3.0 V)} ´
100
(3) Line regulation is calculated by this equation:
(I_OUTn at V_CC = 3.0 V)
5.5 V - 3 V
D (%/V) =
(4) Load regulation is calculated by the equation:
(5) Not tested; specified by design.
(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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