MAX16838
Integrated, 2-Channel, High-Brightness LED Driver
with High-Voltage Boost and SEPIC Controller
Typical Operating Characteristics (continued)
(V IN = V EN = 12V, R RT = 12.2k I , R ISET = 15k I , C VCC = 1 F F, V CC = V DRV = V CFB, V DRAIN = V COMP = V OUT_ , FLT = unconnected,
V OV = V CS = V LEDGND = V DIM = V PGND = V SGND = 0V, V GATE = V NDRV , T A = +25 N C, unless otherwise noted.)
10
9
8
7
6
5
4
3
2
I IN vs. FREQUENCY
360
359
358
357
356
355
354
353
352
SWITCHING FREQUENCY
vs. TEMPERATURE
1
V IN = 12V
351
V IN = 12V
0
1.223
1.222
1.221
1.220
1.219
1.218
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
FREQUENCY (MHz)
V ISET vs. TEMPERATURE
350
1.230
1.230
1.230
1.229
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
V ISET vs. I LED
V IN = 12V
1.217
1.216
1.215
V IN = 12V
V DIM = 0V
1.229
1.229
-40 -25 -10 5 20 35 50 65 80 95 110 125
20
40
60
80
100
120
140
160
1.30
TEMPERATURE (°C)
V EN_TH vs. TEMPERATURE
300
250
I LED (mA)
EN LEAKAGE CURRENT
vs. TEMPERATURE
1.25
1.20
V EN RISING
V EN FALLING
200
150
100
V EN = 40V
V EN = 12V
1.15
50
6
1.10
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Maxim Integrated
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