Datasheet

Data Sheet ADP2381
Rev. 0 | Page 7 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
Operating conditions: T
A
= 25
o
C, V
IN
= 12 V, V
OUT
= 3.3 V, L = 2.2 µH, C
OUT
= 2 × 100 µF, f
SW
= 500 kHz, unless otherwise noted.
Figure 4. Efficiency at V
IN
= 12 V, f
SW
= 500 kHz
Figure 5. Efficiency at V
IN
= 18 V, f
SW
= 500 kHz
Figure 6. Shutdown Current vs. V
IN
Figure 7. Efficiency at V
IN
= 12 V, f
SW
= 250 kHz
Figure 8. Efficiency at V
IN
= 5 V, f
SW
= 500 kHz
Figure 9. Quiescent Current vs. V
IN
100
50
55
60
65
70
75
80
85
90
95
0 1 2 3 4 5 6
EFFICIENCY (%)
OUTPUT CURRENT (A)
10209-004
V
OUT
= 1.2V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
OUT
= 5V
INDUCTOR: FDVE1040-2R2M
MOSFET: FDS6298
100
50
55
60
65
70
75
80
85
90
95
0 1 2 3 4 5 6
EFFICIENCY (%)
OUTPUT CURRENT (A)
10209-005
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
OUT
= 5V
INDUCTOR: FDVE1040-3R3M
MOSFET: FDS6298
10209-006
90
100
110
120
130
140
150
160
4 6 8 10 12 14 16 18 20
SHUTDOWN CURRENT (μA)
V
IN
(V)
T
J
= –40°C
T
J
= +25°C
T
J
= +125°C
100
50
55
60
65
70
75
80
85
90
95
0 1 2 3 4 5 6
EFFICIENCY (%)
OUTPUT CURRENT (A)
10209-007
V
OUT
= 1.2V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
OUT
= 5V
INDUCTOR: FDVE1040-4R7M
MOSFET: FDS6298
100
50
55
60
65
70
75
80
85
90
95
0 1 2 3 4 5 6
EFFICIENCY (%)
OUTPUT CURRENT (A)
10209-008
V
OUT
= 1.0V
V
OUT
= 1.2V
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
INDUCTOR: 744 333 0100
MOSFET: FDS6298
1.80
2.00
2.20
2.40
2.60
2.80
3.00
3.20
4 6 8 10 12 14 16 18 20
QUIESCENT CURRENT (mA)
V
IN
(V)
10209-009
T
J
= –40°C
T
J
= +25°C
T
J
= +125°C