Datasheet

Data Sheet ADP1850
Rev. A | Page 9 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
100
0
10
20
30
40
50
60
70
80
90
0.01 0.1 1 10 100
EFFICIENCY (%)
LOAD (A)
V
O
= 3.3V, PSM
V
O
= 1.8V, PSM
V
O
= 3.3V, PWM
V
O
= 1.8V, PWM
V
IN
= 12V, 600kHz
09440-005
Figure 4. Efficiency Plot of Figure 44
100
0
10
20
30
40
50
60
70
80
90
0.01 0.1 1 10
EFFICIENCY (%)
LOAD (A)
V
O
= 5V, PSM
V
O
= 1.8V, PSM
V
O
= 5V, PWM
V
O
= 1.8V, PWM
V
IN
= 12V, 750kHz
09440-006
Figure 5. Efficiency Plot of Figure 45
–0.25
–0.20
–0.15
–0.10
–0.05
0
2.5 3.0 3.5 4.0 4.5 5.0
∆VCCO (V)
V
IN
(V)
50mA LOAD
100mA LOAD
09440-007
Figure 6. 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 11131517
VCCO (V)
V
IN
(V)
NO LOAD ON LDO
100mA LOAD ON LDO
09440-008
Figure 7. LDO Line Regulation
0
1
2
3
4
5
6
0123456
VCCO (V)
V
IN
(V)
09440-009
Figure 8. VCCO vs. V
IN
CH1 10V
CH3 5V
CH2 10V M1µs A CH1 5.60V
SW1
SW2
SYNC 600kHz
1
3
2
09440-010
Figure 9. An Example of Synchronization, f
SYNC
= 600 kHz