Datasheet

6 Maxim Integrated
Integrated, 2-Channel, High-Brightness LED Driver
with High-Voltage Boost and SEPIC Controller
MAX16838
Typical Operating Characteristics (continued)
(V
IN
= V
EN
= 12V, R
RT
= 12.2kI, R
ISET
= 15kI, C
VCC
= 1FF, 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
= +25NC, unless otherwise noted.)
I
IN
vs. FREQUENCY
FREQUENCY (MHz)
2.0
1.81.4 1.60.6 0.8 1.0 1.20.4
1
2
3
4
5
6
7
8
9
10
0
0.2 2.2
MAX16838 toc03
I
IN
(mA)
V
IN
= 12V
SWITCHING FREQUENCY
vs. TEMPERATURE
TEMPERATURE (°C)
SWITCHING FREQUENCY (kHz)
1109565 80-10 5 20 35 50-25
351
352
353
354
355
356
357
358
359
360
350
-40 125
MAX16838 toc04
V
IN
= 12V
V
ISET
vs. TEMPERATURE
TEMPERATURE (°C)
V
ISET
(V)
1109580655035205-10-25
1.216
1.217
1.218
1.219
1.220
1.221
1.222
1.223
1.215
-40 125
MAX16838 toc05
V
IN
= 12V
V
DIM
= 0V
V
ISET
vs. I
LED
I
LED
(mA)
V
ISET
(V)
140120100806040
1.229
1.229
1.230
1.230
1.230
1.229
20 160
MAX16838 toc06
V
IN
= 12V
V
EN_TH
vs. TEMPERATURE
TEMPERATURE (°C)
V
EN_TH
(V)
1109580655035205-10-25
1.15
1.20
1.25
1.30
1.10
-40 125
MAX16838 toc07
V
EN
RISING
V
EN
FALLING
EN LEAKAGE CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
EN LEAKAGE CURRENT (nA)
1109580655035205-10-25
50
100
150
200
250
300
0
-40 125
MAX16838 toc08
V
EN
= 40V
V
EN
= 12V