MIC4720 Micrel Semiconductor, MIC4720 Datasheet - Page 5

• Manufacturer Part Number: MIC4720
• Description: 2A Integrated Switch Buck Regulator
• Manufacturer: Micrel Semiconductor

Typical Characteristics
Micrel, Inc.
May 2007
100
93
91
89
87
85
83
81
79
77
75
73
71
69
67
65
95
90
85
80
75
70
85
83
81
79
77
75
73
71
69
67
65
95
90
85
80
75
70
65
V
V
IN
OUTPUT CURRENT (A)
V
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
1.8V
1.2V
IN
V
2.5V
3.3V
IN
= 3.3V
IN
= 3.3V
= 5.0V
=3.3V
OUT
OUT
OUT
OUT
MIC4720
MIC4720
MIC4720
MIC4720
V
Efficiency
Efficiency
Efficiency
Efficiency
IN
= 3.6V
V
V
IN
IN
V
V
V
V
IN
= 3.6V
IN
IN
=3.6V
IN
= 5.5V
= 4.5V
=3.0V
= 3.0V
90
85
80
75
70
65
90
85
80
75
70
65
80
75
70
65
60
55
50
45
40
35
30
80
78
76
74
72
70
68
66
64
62
60
V
V
IN
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
1.8V
1.2V
V
1.5V
IN
V
1V
= 3.3V
IN
IN
= 5.0V
= 5.0V
OUT
= 5.0V
OUT
OUT
OUT
MIC4720
MIC4720
MIC4720
MIC4720
Efficiency
Efficiency
Efficiency
Efficiency
5
V
V
V
IN
IN
V
IN
= 4.5V
IN
= 3.6V
V
V
= 3.0V
V
V
IN
IN
= 5.5V
IN
IN
= 5.5V
= 5.5V
= 4.5V
= 4.5V
1.0008
1.0006
1.0004
1.0002
0.9998
0.9996
0.9994
0.9992
1.0010
1.0000
0.9990
95
90
85
80
75
70
65
85
83
81
79
77
75
73
71
69
67
65
85
80
75
70
65
60
55
50
2.7
SUPPLY VOLTAGE (V)
V
3.2
V
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
V
OUTPUT CURRENT (A)
2.5V
1.5V
IN
IN
1V
IN
Line Regulation
= 5.0V
= 5.0V
= 3.3V
OUT
3.7
OUT
OUT
MIC4720
MIC4720
MIC4720
Efficiency
Efficiency
Efficiency
4.2
V
V
V
V
IN
V
M9999-051707
IN
V
IN
IN
IN
IN
= 5.5V
= 4.5V
4.7
= 5.5V
= 3.6V
= 3.0V
= 4.5V
MIC4720
5.2