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MAX16824/MAX16825
High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 12V, C REG = 1μF to GND, I REG = 0, R CS_ = 2 ? from CS_ to GND, T J = T A = -40°C to +125°C, unless otherwise noted. Typical
values are at T J = T A = +25°C.) (Note 2)
PARAMETER
CLK Rising to OUT_ Rising Delay
CLK Rising to OUT_ Falling Delay
OE Rising to OUT_ Rising Delay
OE Falling to OUT_ Falling Delay
SYMBOL
t CRR
t CRF
t OEH
t OEL
CONDITIONS
50% of CLK rising to 50% of OUT_ rising,
Figure 4
50% of CLK rising to 50% of OUT_ falling,
Figure 4
50% of OE rising to 50% of OUT_ rising,
Figure 3
50% of OE falling to 50% of OUT_ falling,
Figure 3
MIN
TYP
MAX
150
475
150
475
UNITS
ns
ns
ns
ns
Note 2: All devices are 100% production tested at T J = +25°C and T J = +125°C. Limits to -40°C are guaranteed by design.
Note 3: This specification does not include sense resistor tolerance and ground error.
Note 4: Dropout is measured as follows: R CS_ = 1.21 ? from CS_ to GND. Force 100mA into OUT_ and measure the dropout voltage
from OUT_ to CS_. DVDO = ( ? OUT_ - V CS_ ).
Note 5: OUT’s current regulation varies with load across REG (see the Typical Operating Characteristics).
Note 6: Overtemperature protection does not function if the output of the 5V reference (REG) is shorted to ground.
Note 7: Guaranteed by design, not production tested.
Typical Operating Characteristics
(V IN = 12V, C REG = 1μF to GND, I REG = 0, R CS_ = 2 ? from CS_ to GND, T A = +25°C, unless otherwise noted. Typical values are at
T A = +25°C.)
DROPOUT VOLTAGE vs. TEMPERATURE
CS_ VOLTAGE vs. OUTPUT CURRENT
OUTPUT CURRENT vs. INPUT VOLTAGE
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
I LOAD = 100mA
0.207
0.202
0.197
0.192
0.187
0.182
190
170
150
130
110
90
70
50
30
10
-10
I LOAD = 150mA
I LOAD = 100mA
4
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
0
15 30 45 60 75 90 105 120 135 150
OUTPUT CURRENT (mA)
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28
V IN (V)
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