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MIC2295 Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC2295
Description  High Power Density 1.2A Boost Regulator
PDF  13 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2295 Datasheet(HTML) 5 Page - Micrel Semiconductor

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Micrel
MIC2295
July 2004
M9999-052402
(408) 955-1690
5
MIC2295 SEPIC 5V Output
64
66
68
70
72
74
76
78
0
50
100
150
200
250
OUTPUT CURRENT (mA)
Vin=3V
Vin=3.5V
Vin=4V
Vin=5V
Vin=5.5V
VIN
EN
SW
FB
GND
MIC2295BML
1
2
3
4
5
VOUT = 5V @ 0.3A
4.7uH
4.7uF/
6.3V
MBRX140
43.2K
14.3K
F/
6.3V
VIN = 3.3V to 5.5V
R1
R2
4.7uH
L1
L2
C1
C2
C3
1uF/16V
L1 = Murata LQH32CN4R7M23
L2 = Murata LQH32CN4R7M23
470pF/
10V
C4
5V MIC2295 SEPIC with one
coupled inductor
30
35
40
45
50
55
60
65
70
75
80
0
50
100
150
200
250
300
LOAD CURRENT (mA)
Vin=2.5
V
Vin=3.3
V
Vin=5V
VI N
EN
SW
FB
GN D
MIC2 2 9 5BML
1
2
3
4
5
VOUT =5V @0.3A
4.7 uH
4.7 uF/
6.3 V
MBRX1 4 0
43.2 K
14.3 K
4.4.7 µF/
6.3V
VIN =3.3 V to5.5 V
R1
R2
4.7 uH
L1
L1
C1
C2
C3
1uF/1 6V
L1 = Sum ida CLS
5D1 1/HP
47 0pF/
10V
C4
MIC2295 12V output Efficiency
60
65
70
75
80
85
90
0
50
100
150
200
OUTPUT CURRENT (mA)
Vin=3.3V
Vin=4.2V
Vin=3.6V
Max Duty Cycle vs Input Voltage
70
75
80
85
90
95
100
2.5
4
5.5
7
8.5
10
SUPPLY VOLTAGE (V)
Input Voltage
vs. Supply Voltage
0.5
0.7
0.9
1.1
1.3
1.5
2.5
4
5.5
7
8.5
10
SUPPLY VOLTAGE (V)
Switch Voltage
vs. Supply Voltage
0
50
100
150
200
250
300
2.5
4.5
6.5
8.5
Input Voltage (V)
MIC2295 15V output Efficiency
60
65
70
75
80
85
90
0
50
100
150
200
OUTPUT CURRENT (mA)
Vin=3.3V
Vin=4V
Vin=4.2V
1.10
1.12
1.14
1.16
1.18
1.20
1.22
1.24
1.26
1.28
1.30
-40 -20 0
20 40 60 80 100 120
TEMPERATURE (°C)
Feedback Voltage
vs. Temperature



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