Datasheet

ADP5520
Rev. A | Page 8 of 40
1
2
3
07445-052
TIME (4µs/DIV)
4
CH1 20.0V
CH3 10.0V
CH2 500mA
CH4 1.0V
SW
INDUCTOR CURRENT
BST
BL_SNK
Figure 9. Boost Operation (Backlight = 30 mA)
07445-053
TIME (4µs/DIV)
1
2
3
4
CH1 20.0V
CH3 10.0V
CH2 500mA
CH4 1.0V
SW
INDUCTOR CURRENT
BST
BL_SNK
Figure 10. Boost Operation (Backlight = 15 mA)
07445-054
TIME (4µs/DIV)
1
2
3
4
CH1 20.0V
CH3 10.0V
CH2 500mA
CH4 1.0V
SW
INDUCTOR CURRENT
BST
BL_SNK
Figure 11. Boost Operation (Backlight = 2 mA)
07445-055
TIME (1ms/DIV)
1
2
3
4
CH1 10.0V
CH3 10.0V
CH2 500mA
CH4 1.0V
SW
INDUCTOR CURRENT
BST
BL_SNK
Figure 12. Boost Startup