MIC2295A Datasheet, PDF (4/9 Pages) Micrel Semiconductor – High Power Density 1.2A Boost Regulator

Micrel
Typical Characteristics
MIC2295 SEPIC 5V Output
78
76
74
72
70
Vin=3V
68
Vin=3.5V
Vin=4V
66
Vin=5V
Vin=5.5V
64
0
50
100
150
200
250
OUTPUT CURRENT (mA)
Max Duty Cycle vs Input Voltage
100
95
90
85
80
75
70
2.5
4
5.5
7
8.5 10
SUPPLY VOLTAGE (V)
MIC2295 12V output Efficiency
90
85
80
75
70
Vin=3.3V
Vin=4.2V
65
Vin=3.6V
60
0
50
100
150
200
OUTPUT CURRENT (mA)
Feedback Voltage
vs. Temperature
1.30
1.28
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
July 2004
MIC2295
5V MIC2295 SEPIC with one
coupled inductor
80
75
70
65
60
55
50
45
40
Vin=2.5
V
Vin=3.3
35
V
Vin=5V
30
0
50
100
150
200
250
300
LOAD CURRENT (mA)
Input Voltage
vs. Supply Voltage
1.5
1.3
1.1
0.9
0.7
0.5
2.5
4
5.5
7
8.5
10
SUPPLY VOLTAGE (V)
15V Short circuit
protected Boost
85
80
75
70
Vin=2.5
V
Vin=3V
65
60
0
20
40
60
80
100
OUTPUT CURRENT (mA)
Current Limit
vs. Temperature
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
4
Switch Voltage
vs. Supply Voltage
300
250
200
150
100
50
0
2.5
4.5
6.5
8.5
Input Voltage (V)
MIC2295 15V output Efficiency
90
85
80
75
70
Vin=3.3V
65
Vin=4V
Vin=4.2V
60
0
50
100
150
200
OUTPUT CURRENT (mA)
12.2
12.15
12.1
12.05
12
11.95
11.9
11.85
11.8
0
Load Regulation
V
IN
=
3.6V
25 50 75 100 125 150
LOAD (mA)
Frequency
vs. Temperature
1.4
1.3
1.2
1.1
1.0
0.9
0.8-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
M9999-052402
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