Analog Devices LINEAR DC2469A Demo Manual page 6

DEMO MANUAL DC2469A
QUICK START PROCEDURE
CH1, CH2 Efficiency
100
92
83
75
67
58
50
0 0.3 0.5 0.8 1 1.3 1.5 1.8 2 2.3 2.5
LOAD CURRENT (A)
Figure 4. Load Transient from 50mA to 450mA at VOUT4, V
6
f = 2MHz
SW
V = 8V
IN
DC2469A F04a
Output Current
5
R SENSE = 0.008
4
3
2
1
0
4 4.4 4.8 5.2 5.6 6 6.4 6.8 7.2 7.6
V
IN
Figure 5. SEPIC Maximum Output Current vs Input Voltage
Efficiency, V
OUT
90
80
Burst Mode OPERATION
PULSE-SKIPPING MODE
70
60
50
40
30
0 0.3 0.5 0.8 1 1.3 1.5 1.8 2 2.3 2.5
LOAD CURRENT (A)
= 5V, F = 400kHz, Burst Mode Operation
IN SW
8
(V)
DC2469A F05
= 8V
f = 400kHz
SW
V = 7V
IN
DC2469A F04b
dc2469af