Typical operating characteristics (continued) – Rainbow Electronics MAX16831 User Manual
Page 6
MAX16831
High-Voltage, High-Power LED Driver with
Analog and PWM Dimming Control
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= V
UVEN
= 14V, C
REG1
= 1µF, C
REG2
= 10µF, C
CLMP
= 0.1µF, R
T
= 25kΩ, R
CS
= 0.1Ω, T
A
= +25°C, unless otherwise noted.)
6.80
6.95
6.90
6.85
7.00
7.05
7.10
-60
20
0
-40 -20
40 60 80 100 120 140
REG2 OUTPUT VOLTAGE
vs. TEMPERATURE
MAX16831 toc04
TEMPERATURE (
°C)
REG2 OUTPUT VOLTAGE (V)
I
REG2
= 20mA
0
2
1
4
3
5
6
7
8
0
10
15
5
20
25
30
35
40
REG2 OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX16831 toc05
SUPPLY VOLTAGE (V)
REG2 OUTPUT VOLTAGE (V)
I
REG2
= 20mA
4.90
4.96
4.94
4.92
4.98
5.00
5.02
-60
20
0
-40 -20
40 60 80 100 120 140
REG1 OUTPUT VOLTAGE
vs. TEMPERATURE
MAX16831 toc06
TEMPERATURE (
°C)
REG1 OUTPUT VOLTAGE (V)
I
REG1
= 2mA
0
1
2
3
4
5
6
0
10
5
15
20
25
30
35
40
REG1 OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX16831 toc07
SUPPLY VOLTAGE (V)
REG1 OUTPUT VOLTAGE (V)
I
REG1
= 2mA
7.5
7.7
7.6
7.8
8.1
8.2
8.0
7.9
8.3
-60
-20
0
20 40
-40
60 80 100 120 140
CLMP REGULATOR VOLTAGE
vs. TEMPERATURE
MAX16831 toc08
TEMPERATURE (
°C)
CLMP VOLTAGE (V)
V
HI
- V
LO
= 11V
CLMP VOLTAGE = V
CLMP
- V
LO
1
3
2
5
4
6
7
8
9
0
10
15
5
20
25
30
35
40
CLMP REGULATOR VOLTAGE
vs. (V
HI
- V
LO
)
MAX16831 toc09
V
HI
- V
LO
(V)
CLMP REGULATOR VOLTAGE (V)
CLMP REGULATOR VOLTAGE = V
CLMP
- V
LO
2.96
2.99
2.98
2.97
3.00
3.01
3.02
-60
20
0
-40 -20
40 60 80 100 120 140
REF OUTPUT VOLTAGE
vs. TEMPERATURE
MAX16831 toc10
TEMPERATURE (
°C)
REF OUTPUT VOLTAGE (V)
I
REF
= 100
µA
2.96
2.97
2.99
2.98
3.01
3.00
3.02
-225
-125 -75
-175
-25
25
75 125 175 225
REF OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX16831 toc11
LOAD CURRENT (
µA)
REF OUTPUT VOLTAGE (V)
470
500
490
480
510
520
530
-60
20
0
-40 -20
40 60 80 100 120 140
PWM OSCILLATOR FREQUENCY
vs. TEMPERATURE
MAX16831 toc12
TEMPERATURE (
°C)
PWM FREQUENCY (kHz)
R
T
= 25k
Ω