Datasheet

Data Sheet ADP2323
Rev. A | Page 9 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
Operating conditions: T
A
= 25°C, V
IN
= 12 V, V
OUT
= 3.3 V, L = 4.7 µH, C
OUT
= 2 × 47 µF, f
SW
= 600 kHz, unless otherwise noted.
50
55
60
65
70
75
80
85
90
95
100
0 0.5 1.0 1.5 2.0 2.5 3.0
EFFICIENCY (%)
OUTPUT CURRENT (A)
V
OUT
= 5.0V
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V
INDUCTOR: CDRH105RNP-3R3N
MOSFET: FDS8880
09357-005
Figure 5. Efficiency at V
IN
= 12 V, f
SW
= 600 kHz, FPWM
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
V
OUT
= 3.3V, FPWM
V
OUT
= 3.3V, PFM
V
OUT
= 5V, FPWM
V
OUT
= 5V, PFM
09357-006
INDUCTOR: CDRH105RNP-3R3N
MOSFET: FDS8880
0.01 0.1 1 10
OUTPUT CURRENT (A)
Figure 6. Efficiency at V
IN
= 12 V, f
SW
= 600 kHz, PFM
10
15
20
25
30
35
40
4 6 8 10 12 14 16 18 20
SHUTDOWN CURRENT (μA)
V
IN
(V)
09357-007
T
J
= –40°C
T
J
= +25°C
T
J
= +125°C
Figure 7. Shutdown Current vs. V
IN
0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
INDUCTOR: CDRH105RNP-6R8N
MOSFET: FDS8880
V
OUT
= 5.0V
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V
09357-008
50
55
60
65
70
75
80
85
90
95
100
EFFICIENCY (%)
Figure 8. Efficiency at V
IN
= 12 V, f
SW
= 300 kHz, FPWM
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10
EFFICIENCY (%)
OUTPUT CURRENT (A)
V
OUT
= 3.3V, FPWM
V
OUT
= 3.3V, PFM
V
OUT
= 5V, FPWM
V
OUT
= 5V, PFM
09357-009
INDUCTOR: CDRH105RNP-6R8N
MOSFET: FDS8880
Figure 9. Efficiency at V
IN
= 12 V, f
SW
= 300 kHz, PFM
2.80
2.85
2.90
2.95
3.00
3.05
3.10
3.15
3.20
4 6 8 10 12 14
16 18 20
QUIESCENT CURRENT (mA)
V
IN
(V)
T
J
= –40°C
T
J
= +25°C
T
J
= +125°C
09357-010
Figure 10. Quiescent Current vs. V
IN