Linear Technology DC875 Quick Start Manual page 4

Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Downloaded from Downloaded from Downloaded from Downloaded from
QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 875
95
90
85
80
75
70
65
2 2.5 3
DC875A Ltc3454 Efficie ncy
95
90
85
80
75
70
65
2 2.5 3
HIGH EFFICIENCY BUCK-BOOST FLASH LED DRIVER
DC875A Ltc3454 Efficie ncy
3.5 4 4.5
Vin Volta ge
Iout=400mA
Iout=600mA
Iout=1000mA
3.5 4 4.5
Vin Volta ge
Figure 2. Efficiency
Iout=150mA
Iout=200mA
Iout=350mA
5 5.5 6
5 5.5 6
4