Datasheet

0 4
84
86
88
90
92
94
96
EFFICIENCY (%)
LOAD CURRENT (A)
1 2 3
V
IN
= 3.3V
V
IN
= 5.0V
0 4
76
94
EFFICIENCY (%)
LOAD CURRENT (A)
1 2 3
78
80
82
84
86
88
90
92
V
IN
= 3.3V
V
IN
= 5.0V
0 4
80
82
84
86
88
90
92
94
EFFICIENCY (%)
LOAD CURRENT (A)
1 2 3
V
IN
= 3.3V
V
IN
= 5.0V
0 4
92
93
94
95
96
97
98
EFFICIENCY (%)
LOAD CURRENT (A)
1 2 3
V
IN
= 4.0V
V
IN
= 5.0V
0 4
74
92
EFFICIENCY (%)
LOAD CURRENT (A)
1 2 3
76
78
80
82
84
86
88
90
V
IN
= 3.3V
V
IN
= 5.0V
0 4
89
90
91
92
93
94
95
96
97
EFFICIENCY (%)
LOAD CURRENT (A)
1 2 3
V
IN
= 3.3V
V
IN
= 5.0V
LM2854
www.ti.com SNVS560C –MARCH 2008–REVISED APRIL 2013
Typical Performance Characteristics (continued)
Unless otherwise specified, the following conditions apply: VIN = PVIN = AVIN = EN = 5.0V, C
IN
is 47 µF 10V X5R ceramic
capacitor, L
O
is from TDK SPM6530T family; T
AMBIENT
= 25°C for efficiency curves, bode plots and waveforms, and T
J
= 25°C
for all others.
LM2854 1 MHz Efficiency vs. LM2854 1 MHz Efficiency vs.
I
OUT
V
OUT
= 0.8V, L
O
= 0.47 µH, 3.3 mΩ DCR I
OUT
V
OUT
= 2.5V, L
O
= 1.0 µH, 7.1 mΩ DCR
Figure 14. Figure 15.
LM2854 1 MHz Efficiency vs. LM2854 1 MHz Efficiency vs.
I
OUT
V
OUT
= 1.2V, L
O
= 0.68 µH, 4.9 mΩ DCR I
OUT
V
OUT
= 3.3V, L
O
= 1.0 µH, 7.1 mΩ DCR
Figure 16. Figure 17.
LM2854 1 MHz Efficiency vs. LM2854 500 kHz Efficiency vs.
I
OUT
V
OUT
= 1.8V, L
O
= 1.0 µH, 7.1 mΩ DCR I
OUT
V
OUT
= 0.8V, L
O
= 1.0 µH, 7.1 mΩ DCR
Figure 18. Figure 19.
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