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MAX17061ETI+
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P26
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)
T
ypical 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.)
MAX17061
8-String White LED Driver with
SMBus for LCD Panel Applications
8
_______________________________________________________________________________________
T
ypical Operating Characteristics (continued)
(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.)
SWITCHING WAVEFORMS
(V
IN
= 7V, BRIGHTNESS = 100%)
MAX17061 toc08
1
μ
s/div
V
LX
20V/div
I
L
200mA/div
0V
0mA
SWITCHING WAVEFORMS
(V
IN
= 20V, BRIGHTNESS = 100%)
MAX17061 toc09
1
μ
s/div
V
LX
20V/div
I
L
200mA/div
0V
0mA
STARTUP WAVEFORMS
(BRIGHTNESS = 100%)
MAX17061 toc10
400
μ
s/div
V
LX
20V/div
I
L
1A/div
V
OUT
20V/div
V
CCV
2V/div
0V
0V
0V
0A
STARTUP WAVEFORMS
(SMBus = 0x04)
MAX17061 toc11
400
μ
s/div
V
LX
20V/div
I
L
1A/div
V
OUT
20V/div
V
CCV
2V/div
0V
0V
0V
0A
LED CURRENT WAVEFORMS
(SMBus = 0x80)
MAX17061 toc12
2ms/div
V
FB1
10V/div
I
L
500mA/div
I
LED
20mA/div
V
OUT
20V/div
0V
0mA
0mA
0V
LED CURRENT WAVEFORMS
(SMBus = 0x04)
MAX17061 toc13
2ms/div
V
FB1
10V/div
I
L
500mA/div
I
LED
20mA/div
V
OUT
20V/div
0V
0mA
0mA
0V
MAX17061
8-String White LED Driver with
SMBus for LCD Panel Applications
_______________________________________________________________________________________
9
T
ypical Operating Characteristics (continued)
(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.)
LED-OPEN FAULT PROTECTION
(BRIGHTNESS = 100%, LED OPEN ON FB1)
MAX17061 toc14
400
μ
s/div
V
FB1
1V/div
I
FB2
20mA/div
I
FB2
10V/div
V
OUT
20V/div
0V
0V
0V
0mA
LED-SHORT FAULT PROTECTION
(BRT = 100%, 2 LEDs SHORT ON FB1)
MAX17061 toc15
1ms/div
V
FB1
5V/div
V
FB2
10V/div
I
FB2
20mA/div
I
FB1
20mA/div
0V
0V
0mA
0mA
LINE TRANSIENT RESPONSE
(V
IN
= 12V
→
19V, BRIGHTNESS = 100%)
MAX17061 toc16
100
μ
s/div
V
OUT
20V/div
I
L
1A/div
I
FB1
20mA/div
V
IN
10V/div
0V
0V
0A
0mA
LINE TRANSIENT RESPONSE
(V
IN
= 19V
→
12V, BRIGHTNESS = 100%)
MAX17061 toc17
100
μ
s/div
V
OUT
20V/div
I
L
1A/div
I
FB1
20mA/div
V
IN
10V/div
0V
0V
0A
0mA
LED CURRENT BALANCE
vs. INPUT VOLTAGE
MAX17061 toc18
LED CURRENT BALANCE (%)
17
20
14
11
8
-0.2
0.2
0.6
1.0
-1.0
-0.6
5
INPUT VOLTAGE (V)
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P26
MAX17061ETI+
Mfr. #:
Buy MAX17061ETI+
Manufacturer:
Maxim Integrated
Description:
LED Lighting Drivers 8-String White LED Driver w/SMBus
Lifecycle:
New from this manufacturer.
Delivery:
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