Datasheet

ADP1877 Data Sheet
Rev. D | Page 10 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10
EFFICIENCY (%)
LOAD (A)
PSM
PWM
V
IN
= 12V
V
OUT
= 3.3V
600kHz
100
08299-023
Figure 5. Efficiency Plot of Figure 41, 10 A Output
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10
EFFICIENCY (%)
LOAD (A)
V
O
= 1.05V_PWM
V
OUT
= 1.05V PSM
V
O
= 1.05V PWM
V
IN
= 3V
V
OUT
= 1.8V PWM
V
OUT
= 1.8V PSM
08299-024
Figure 6. Efficiency Plot of Figure 44, 2 A Output
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0.5
0 5 10 15 20
LOAD REGUL
A
TION (%)
LOAD (A)
V
IN
= 12V
V
OUT
= 3.3V
0
8299-025
Figure 7. Load Regulation of Figure 42
0
0.01
0.02
0.03
0.04
0.05
0.06
6 8 10 12 14
LINE REGUL
A
TION (%)
V
IN
(V)
V
OUT
= 3.3V AT 1A LOAD
08299-026
Figure 8. Line Regulation of Figure 42
–0.25
–0.20
–0.15
–0.10
–0.05
0
2.53.03.54.04.55.0
∆ VCCO (V)
V
IN
(V)
50mA LOAD
100mA LOAD
08299-027
Figure 9. LDO Load Regulation
4.65
4.70
4.75
4.80
4.85
4.90
4.95
5.00
5.05
5.10
5 7 9 11 13 15 17
VCCO (V)
V
IN
(V)
NO LOAD ON LDO
100mA LOAD ON LDO
08299-028
Figure 10. LDO Line Regulation