Datasheet

ADP1828
Rev. C | Page 10 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
02468101214161820
LOAD (A)
90
80
70
60
50
40
30
EFFICIENCY (%)
300kHz
600kHz
V
IN
= 12V
V
OUT
= 1.8V
T
A
= 25°C
06865-002
Figure 5. Efficiency vs. Load Current of Figure 1
0 5 10 15 20 25
LOAD (A)
95
90
85
80
75
70
65
60
55
EFFICIENCY (%)
f
SW
= 300kHz
V
OUT
= 1.8V
T
A
= 25°C
06865-005
V
IN
= 5.5V
V
IN
= 3.3V
V
IN
= 12V
V
IN
= 15V
Figure 6. Efficiency vs. Load Current of Figure 1
01 2345
95
90
85
80
75
70
65
60
55
EFFICIENCY (%)
LOAD (A)
f
SW
= 600kHz
V
IN
= 3.3V
V
OUT
= 1.2V
T
A
= 25°C
06865-006
Figure 7. Efficiency vs. Load Current of Figure 54
01 2345
95
90
85
80
75
70
65
60
55
50
EFFICIENCY (%)
LOAD (A)
f
SW
= 600kHz
V
IN
= 12V
V
OUT
= 3.3V
T
A
= 25°C
06865-007
Figure 8. Efficiency vs. Load Current of Figure 55
0 5 10 15 20 25 30
95
90
85
80
75
70
65
60
55
50
45
EFFICIENCY (%)
LOAD (A)
f
SW
= 300kHz
V
IN
= 12V
V
OUT
= 1.8V
T
A
= 25°C
06865-008
Figure 9. Efficiency vs. Load Current of Figure 57
06865-009
5.5
5.0
4.5
4.0
3.5
3.0
VREG OUTPUT (V)
3.0 3.5 4.0 4.5 5.0 5.5
V
IN
(V)
T
A
= 25°C
Figure 10. VREG in Dropout, No Load