User manual

80
82
84
86
88
90
92
94
96
1 2 3 4 5 6 7
V
LED
(V)
2A
4A
6A
8A
EFFICIENCY (%)
0
10
20
30
40
50
60
70
80
90
100
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
ADJ VOLTAGE (V)
V
SENSE
(mV)
84
86
88
90
92
94
96
1 2 3 4 5 6 7
V
LED
(V)
2A
4A
6A
8A
EFFICIENCY (%)
87
88
89
90
91
92
93
94
95
96
97
1 2 3 4 5 6 7
2A
4A
6A
8A
V
LED
(V)
EFFICIENCY (%)
Typical Performance Characteristics www.ti.com
6 Typical Performance Characteristics
Figure 2. Efficiency vs. LED Forward Voltage Figure 3. Efficiency vs. LED Forward Voltage
(V
CGND
- V
EE
= 9V) (V
CGND
- V
EE
= 12V)
Figure 4. Efficiency vs. LED Forward Voltage Figure 5. V
SENSE
vs. V
ADJ
(V
CGND
- V
EE
= 14V)
6
AN-1793 LM3433 4A to 20A LED Driver Evaluation Board SNVA327B–March 2008–Revised May 2013
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