Analog Devices LINEAR DC2469A, Демонстрационное руководство

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