Linear Technology LT3755 Quick Start Manual page 6

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1268A-A, 1268A-B
100%
98%
96%
94%
92%
90%
88%
86%
84%
82%
80%
5
1.2
1.0
0.8
0.6
0.4
0.2
0.0
5
Figure 4. DC1268A-A/B LED Current Drops at Low VIN (CTRL) and Turns Off at Lower VIN (UVLO)
10 15 20
INPUT VOLTAGE (V)
Figure 3. DC1268A-A/B Efficiency with 50V LEDs at 1A
10 15 20
INPUT VOLTAGE (V)
HIGH VOLTAGE LED CONTROLLER
25 30 35
25 30 35
40
40
6