Datasheet

Typical characteristics L4973
18/28
Figure 29. Efficiency vs. output current
(see Figure 7)
Figure 30. Efficiency vs. output current
(see Figure 8)
Figure 31. Efficiency vs. output current
(see Figure 8)
Figure 32. Power dissipation vs. input
voltage (device only)
(see Figure 7)
0123I
O
(A)
75
80
85
90
η
(%)
D97IN646
Vcc=12V
Vcc=24V
Vcc=48V
V
O
= 5.1V
f
sw
= 200KHz
0123I
O
(A)
75
80
85
90
η
(%)
D97IN644
Vcc=12V
Vcc=24V
Vcc=48V
V
O
= 3.3V
f
sw
= 100KHz
0123I
O
(A)0.5 1.5 2.5 3.5
70
75
85
η
(%)
80
90
D97IN662
Vcc=48V
Vcc=12V
Vcc=24V
V
O
= 3.3V
f
sw
= 200KHz
0 10 30 40 Vcc
(
V
)
20 50
0
0.5
1.0
1.5
Pdiss
(W)
D97IN647A
I
O
=3.5A
I
O
=3A
I
O
=2A
I
O
=2.5A
V
O
= 5.1V
f
sw
= 100KHz