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24-Output PWM LED Drivers
for Message Boards
ABSOLUTE MAXIMUM RATINGS
(All voltages with respect to GND.)
V DD ........................................................................-0.3V to +4.0V
R0–R7, G0–G7, B0–B7, MUX0 , and MUX1 ...........-0.3V to +8.0V
All Other Pins..............................................-0.3V to (V DD + 0.3V)
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Continuous Power Dissipation (T A = +70°C)
40-Pin TQFN (derate 37mW/°C over +70°C) .............2963mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V DD = 3.0V to 3.6V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V DD = 3.3V, T A = +85°C.) (Note 1)
PARAMETER
Operating Supply Voltage
SYMBOL
V DD
CONDITIONS
MIN
3.0
TYP
MAX
3.6
UNITS
V
LEDs Anode Voltage
(R0–R7, G0–G7, B0–B7, MUX0 ,
and MUX1 )
V O
f CLKI = 0Hz; CLKO_, DOUT_ loaded 200 Ω ;
calibration DACs set to 0x01
28
7
52
V
Supply Current
I DD
f CLKI = 0Hz; CLKO_, DOUT_ loaded 200 Ω ;
calibration DACs set to 0xFF
51
72
mA
f CLKI = 32MHz; CLKO_, DOUT_ loaded 200 Ω ;
calibration DACs set to 0xFF
54
77
Input High Voltage LOADI
Input Low Voltage LOADI
V IHC
V ILC
0.7
x V DD
0.3
x V DD
V
V
Differential Input Voltage Range
CLKI_, DIN_
Common-Mode Input Voltage
CLKI_, DIN_
Differential Input High Threshold
V ID
V CM
VDIFF TH
±0.15
|V ID / 2|
8
±1.20
2.4
100
V
V
mV
Differential Input Low Threshold
VDIFF TL
-100
-8
mV
Differential Output Voltage
CLKO_, DOUT_
V OD
Termination 200 Ω at receiver _+ and _- inputs
±190
±550
mV
Differential Output Offset
CLKO_, DOUT_
Input Leakage Current
CLKI_, DIN_, LOADI
V OS
I IH , I IL
Termination 200 Ω at receiver _+ and _- inputs
1.125
-1
1.25
1.375
+1
V
μA
Input Capacitance
CLKI_, DIN_, LOADI
10
pF
Output Low Voltage LOADO
V OLC
I SINK = 5mA
0.05
0.25
V
Output High Voltage LOADO
V OHC
I SOURCE = 5mA
V DD
- 0.5
V DD
- 0.2
V
2
_______________________________________________________________________________________
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