High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
Typical Operating Characteristics (continued)
(V IN = V EN = +12V, T A = +25°C, unless otherwise noted.)
1.0
DROPOUT VOLTAGE
vs. TEMPERATURE
35
SHUTDOWN CURRENT
vs. TEMPERATURE
5.5
+5V REGULATOR OUTPUT
vs. TEMPERATURE
0.9
0.8
30
V IN = 40V
5.4
0.7
25
I LOAD = 1mA
NO LOAD
0.6
0.5
0.4
I LOAD = 350mA
20
15
V IN = 20V
V IN = 12V
5.3
5.2
0.3
10
0.2
0.1
5
V IN = 6.5V
5.1
I LOAD = 5mA
0
0.210
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
(V CS+ - V CS- ) vs. I V5
0
5.30
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
+5V REGULATOR OUTPUT vs. V IN
5.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
200Hz DIMMED OPERATION
MAX16803 toc09
0.209
0.208
0.207
0.206
0.205
5.25
NO LOAD
I LOAD = 350mA
V DIM
2V/div
0V
0.204
0.203
0.202
0.201
I LOAD = 410mA
5.20
5.15
LOAD = 1mA
V IN = V EN = 12V
DIM PULSED AT
200Hz (1%
DUTY CYCLE)
I LOAD
200mA/div
0A
0.200
0.199
0.198
5.10
LOAD = 5mA
0
1
2
3
4
5
6
7
8
5
10
15
20
25
30
35
40
20 μ s/div
I V5 (mA)
200Hz DIMMED OPERATION (EXPANDED)
MAX16803 toc10
V IN (V)
200Hz DIMMED OPERATION (EXPANDED)
MAX16803 toc11
I LOAD = 350mA
I LOAD = 350mA
V IN = V EN = 12V
DIM PULSED AT
200Hz (50%
DUTY CYCLE)
V DIM
2V/div
0V
V IN = V EN = 12V
DIM PULSED AT
200Hz (50%
DUTY CYCLE)
V DIM
2V/div
0V
20 μ s/div
I LOAD
200mA/div
0A
20 μ s/div
I LOAD
200mA/div
0A
4
_______________________________________________________________________________________
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