
MAX16826
Programmable, Four-String HB LED Driver with
Output-Voltage Optimization and Fault Detection
Typical Operating Characteristics
(V IN = 12V, R19 = 2k Ω , C33 = 2200pF, R17 = 1.27k Ω , C DL_ = 0.01μF. T A = +25°C, unless otherwise noted.)
16
14
12
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
40
30
SUPPLY CURRENT
vs. OSCILLATOR FREQUENCY
C DL = 4700pF
C33 FROM 680pF TO 8200pF
17
16
SUPPLY CURRENT
vs. TEMPERATURE
10
8
6
20
15
14
4
2
0
C DL = 4700pF
10
0
13
12
C DL = 4700pF
0
4
8
12
16
20
24
100 200 300 400 500 600 700 800 900 1000
-40
-15
10
35
60
85
110
360
350
340
330
320
310
300
SUPPLY VOLTAGE (V)
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
400
360
320
280
240
200
OSCILLATOR FREQUENCY (kHz)
OSCILLATOR FREQUENCY
vs. TEMPERATURE
145
143
141
139
137
135
TEMPERATURE ( ° C)
LED OUTPUT CURRENT
vs. TEMPERATURE
V CS = 0.32V
5.5
9.2
12.9
16.6
20.3
24.0
-40
-15
10
35
60
85
110
0
20
40
60
80
100
150
120
SUPPLY VOLTAGE (V)
LED OUTPUT CURRENT
vs. INPUT VOLTAGE
TEMPERATURE ( ° C)
TEMPERATURE ( ° C)
DIM INPUT TO ILED OUTPUT WAVEFORM
MAX16826 toc08
90
V DIM
5V/div
0V
60
I LED
100mA/div
0mA
30
0
0
6
12
18
24
2 μ s/div
INPUT VOLTAGE (V)
6
Maxim Integrated