Typical operating characteristics – Rainbow Electronics MAX17061 User Manual
Page 7
MAX17061
8-String White LED Driver with
SMBus for LCD Panel Applications
_______________________________________________________________________________________
7
BOOST CONVERTER EFFICIENCY
vs. INPUT VOLTAGE (BRIGHTNESS = 100%)
MAX17061 toc01
INPUT VOLTAGE (V)
BOOST CONVERTER EFFICIENCY (%)
19
16
13
10
86
87
88
89
90
85
7
LED CURRENT
vs. SMBus BRIGHTNESS SETTING
MAX17061 toc02
SMBus BRIGHTNESS SETTING
LED CURRENT (mA)
200
250
150
100
50
0
10
15
20
25
30
0
5
LED CURRENT
vs. PWMI DUTY CYCLE
MAX17061 toc03
PWMI DUTY CYCLE (%)
LED CURRENT (mA)
80
100
60
40
20
10
15
20
25
30
0
5
0
SMBus = 255
SMBus = 128
LED CURRENT vs. AMBIENT TEMPERATURE
(BRIGHTNESS = 100%)
MAX17061 toc04
AMBIENT TEMPERATURE (
°C)
LED CURRENT (mA)
60
80
40
20
24.6
25.0
24.8
25.4
25.2
25.8
25.6
26.0
24.0
24.4
24.2
0
LED CURRENT
vs. INPUT VOLTAGE
MAX17061 toc05
LED CURRENT (mA)
17
20
14
11
8
10
15
20
25
30
0
5
5
SMBus = 0xFF
SMBus = 0x1F
INPUT VOLTAGE (V)
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX17061 toc06
SUPPLY CURRENT (mA)
17
20
14
11
8
2
3
4
5
0
1
5
SMBus = 255
SMBus = 0
INPUT VOLTAGE (V)
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAX17061 toc07
SHUTDOWN CURRENT (
μ
A)
17
20
14
11
8
4
6
8
10
0
2
5
INPUT VOLTAGE (V)
Typical Operating Characteristics
(Circuit of Figure 1, V
IN
= 12V, C
CCV
= 0.022µF, R
CCV
= 5.1k
Ω, V
ISET
= V
OSC
= V
DD
= V
CC
, R
FSET
= 464k
Ω, V
PWMI
= GND, LEDs =
10 series x 4 parallel strings, T
A
= +25°C, unless otherwise noted.)