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MAX16824/MAX16825
High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
Typical Operating Characteristics (continued)
(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.)
SUPPLY CURRENT
200
180
OUTPUT CURRENT vs. TEMPERATURE
3.45
vs. TEMPERATURE
5.10
5.08
OUTPUT VOLTAGE vs. TEMPERATURE
160
140
120
100
I OUT_ = 150mA
I OUT_ = 95mA
3.25
3.05
2.85
V IN = 28V
V IN = 6.5V
5.06
5.04
5.02
5.00
I LOAD = 0
80
4.98
60
40
20
I OUT_ = 10mA
2.65
2.45
V PWM1 = V PWM2 = V PWM3 = 0
4.96
4.94
4.92
I LOAD = 4mA
I LOAD = 1mA
0
0.200
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
CS_ VOLTAGE vs. REG OUTPUT CURRENT
2.25
5.000
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
4.90
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
LED CURRENT FALL TIME
MAX16824 toc09
0.199
0.198
0.197
0.196
0.195
0.194
0.193
0.192
0.191
I LOAD = 100mA
4.995
4.990
4.985
4.980
I REG = 0
I REG = 1mA
I LED = 150mA
V IN = 12V
PULSED AT 200Hz
(50% DUTY CYCLE)
V PWM_
2V/div
0V
0.190
0.189
0.188
0.187
0.186
0.185
0.184
I LOAD = 150mA
4.975
4.970
4.965
I REG = 4mA
I OUT_
100mA/div
0A
0.183
0.182
4.960
0
1
2
3
4
5
6
7
8
9
10
0
4
8
12
16
20
24
28
2 μ s/div
I REG (mA)
LED CURRENT RISE TIME
MAX16824 toc10
V PWM_
V IN (V)
330Hz DIMMED OPERATION
MAX16824 toc11
I LOAD = 150mA
V IN = 12V
PWM_ PULSED
2V/div
0V
I OUT_
AT 330Hz
(1% DUTY CYCLE)
V PWM_
2V/div
0V
Maxim Integrated
I LED = 150mA
V IN = 12V
PULSED AT 200Hz
(50% DUTY CYCLE)
2 μ s/div
100mA/div
0A
20 μ s/div
I OUT_
100mA/div
0A
5
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