Typical operating characteristics (continued) – Rainbow Electronics MAX16823 User Manual
Page 4
MAX16823
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
4
_______________________________________________________________________________________
SUPPLY CURRENT vs. TEMPERATURE
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
MAX16823 toc05
-40 -25 -10 5
20 35 50 65 80 95 110 125
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
V
IN
= 5.5V
V
IN
= 12V
V
IN
= 20V
V
IN
= 40V
V
DIM1
= V
DIM2
= V
DIM3
= 0V
V
REG
vs. TEMPERATURE
TEMPERATURE (°C)
V
REG
(V)
MAX16823 toc06
-40 -25 -10 5
20 35 50 65 80 95 110 125
3.0
3.1
3.2
3.3
3.4
3.5
I
LOAD
= 4mA
I
LOAD
= 1mA
I
LOAD
= 0
V
CS_
vs. I
REG
I
REG
(mA)
V
CS_
(V)
MAX16823 toc07
0
1
2
3
4
5
6
7
8
9
10
0.195
0.196
0.197
0.198
0.199
0.200
0.201
0.202
0.203
0.204
0.205
0.206
0.207
0.208
0.209
0.210
I
LOAD
= 70mA
V
REG
vs. V
IN
V
IN
(V)
V
REG
(V)
MAX16823 toc08
0
5
10
15
20
25
30
35
40
3.35
3.36
3.37
3.38
3.39
3.40
3.41
3.42
3.43
3.44
3.45
I
REG
= 0
I
REG
= 1mA
I
REG
= 4mA
330Hz DIMMED OPERATION
MAX16823 toc09
20
µs/div
V
DIM
2V/div
0V
0A
I
LED
50mA/div
V
IN
= 12V, DIM
PULSED AT 33Hz
(1% DUTY CYCLE)
I
LOAD
= 70mA
200Hz DIMMED OPERATION (EXPANDED)
MAX16823 toc10
10µs/div
V
DIM
2V/div
0V
0A
I
LOAD
50mA/div
V
IN
= 12V, DIM
PULSED AT 200Hz
(50% DUTY CYCLE)
I
LOAD
= 70mA
200Hz DIMMED OPERATION (EXPANDED)
MAX16823 toc11
10µs/div
V
DIM
2V/div
0V
0A
I
LOAD
50mA/div
V
IN
= 12V, DIM
PULSED AT 200Hz
(50% DUTY CYCLE)
I
LOAD
= 70mA
DROPOUT VOLTAGE vs. TEMPERATURE
TEMPERATURE (°C)
DROPOUT VOLTAGE (mV)
MAX16823 toc04
-40 -25 -10 5
20 35 50 65 80 95 110 125
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
I
LOAD
= 70mA
Typical Operating Characteristics (continued)
(V
IN
= 12V, C
REG
= 0.1µF, I
REG
= 0, V
LGC
= unconnected, connect R
CS_
= 2.85Ω from CS_ to GND. Connect OUT_ to CS_ through
a resistor, T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
LEDGOOD RESPONSE TIMES
MAX16823 toc12
2ms/div
V
DIM
V
LEDGOOD
5V/div
5V/div
0V
0V
0V
V
LGC
5V/div
V
IN
= 12V
C
LGC
= 15nF