High-Voltage, 350mA LED Driver with
Analog and PWM Dimming Control
Typical Operating Characteristics (continued)
(V IN = 12V, V EN = V IN , C V5 = 0.1μF, I V5 = 0, CS- = GND, R SENSE = 0.56 Ω , connect OUT to CS+, V DIM = 4V, T A = +25°C, unless
otherwise noted.)
1.0
DROPOUT VOLTAGE
vs. TEMPERATURE
40
SHUTDOWN CURRENT
vs. TEMPERATURE
5.20
+5V REGULATOR OUTPUT
vs. TEMPERATURE
0.9
0.8
0.7
V IN = 12V
I LOAD = 350mA
35
30
V IN = 40V
5.15
I LOAD = 1mA
NO LOAD
0.6
25
0.5
20
V IN = 20V
5.10
0.4
0.3
0.2
15
10
V IN = 12V
V IN = 6.5V
5.05
I LOAD = 2mA
0.1
0
5.20
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
+5V REGULATOR OUTPUT vs. V IN
5
0
0.1990
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
(V CS+ - V CS- ) vs. I V5
5.00
V IN = 12V
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE ( ° C)
200Hz DIMMED OPERATION
MAX16804 toc09
5.15
5.10
NO LOAD
0.1989
0.1988
0.1987
0.1986
0.1985
I LOAD = 350mA
V IN = 12V
I LOAD = 350mA
V IN = 12V
V DIM
2V/div
0V
5.05
I LOAD = 2mA
I LOAD = 1mA
0.1984
0.1983
0.1982
DIM PULSED AT
200Hz (1% DUTY
CYCLE)
I LOAD
200mA/div
0A
0.1981
5.00
0.1980
5
10
15
20
25
30
35
40
0
1
2
3
4
5
6
7
8
9
10
20 μ s/div
V IN (V)
LED CURRENT FALL TIME (EXPANDED)
MAX16804 toc10
DIM PULSED AT
I V5 (mA)
LED CURRENT RISE TIME (EXPANDED)
MAX16804 toc11
DIM PULSED AT
200Hz
V DIM
200Hz
V DIM
20 μ s/div
2V/div
0V
I LED
200mA/div
0A
20 μ s/div
2V/div
0V
I LED
200mA/div
0A
4
_______________________________________________________________________________________
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