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MIC23031-AYMT Datasheet(PDF) 4 Page - Micrel Semiconductor

Part # MIC23031-AYMT
Description  4MHz PWM 400mA Buck Regulator with Hyper Light Load?
Download  17 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC23031-AYMT Datasheet(HTML) 4 Page - Micrel Semiconductor

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Micrel Inc.
MIC23031
May 2008
4
M9999-051608-A
Typical Characteristics
50
60
70
80
90
100
1
10
100
1000
OUTPUT CURRENT (mA)
Efficiency VOUT = 2.5V
= 3.0V
= 3.6V
= 4.2V
L
50
60
70
80
90
100
1
10
100
1000
OUTPUT CURRENT (mA)
Efficiency VOUT = 1.8V
= 2.7V
= 3.6V
= 4.2V
= 3.0V
L
50
60
70
80
90
100
1
10
100
1000
OUTPUT CURRENT (mA)
Efficiency VOUT = 1.2V
= 3.6V
= 4.2V
= 3.0V
L
= 2.7V
50
60
70
80
90
100
1
10
100
1000
OUTPUT CURRENT (mA)
Efficiency
with Various Inductors
L = 2.2
L = 4.7
L = 1.0
L = 0.47
0
5
10
15
20
25
30
35
40
2.7 3.2 3.7 4.2 4.7 5.2 5.7
INPUT VOLTAGE (V)
Quiescent Current
vs Input Voltage
1.7
1.72
1.74
1.76
1.78
1.8
1.82
1.84
1.86
1.88
1.9
2.7 3.2 3.7 4.2 4.7 5.2 5.7
INPUT VOLTAGE (V)
Output Voltage
vs Input Voltage
10mA
1mA
50mA
150mA
L
300mA
400mA
1.6
1.65
1.7
1.75
1.8
1.85
1.9
1.95
2
1
10
100
1000
OUTPUT CURRENT (mA)
Output Voltage
vs Output Current
= 3.6V
= 4.2V
L
= 3.0V
1.5
1.6
1.7
1.8
1.9
TEMPERATURE (C°)
Output Voltage
vs Temperature
= 1.8V
L
20 40 60 80
3
3.5
4
4.5
5
20 40 60 80
TEMPERATURE (C°)
Frequency vs
Temperature
0.01
0.1
1
10
1
10
100
1000
OUTPUT CURRENT (mA)
SW Frequency
vs Output Current
= 3.0V
= 3.6V
= 4.2V
L
0.001
0.01
0.1
1
10
1
10
100
1000
OUTPUT CURRENT (mA)
SW Frequency
vs Output Current
=
=
=
=
0
0.2
0.4
0.6
0.8
1
1.2
2.7 3.2 3.7 4.2 4.7 5.2 5.7
INPUT VOLTAGE (V)
Enable Threshold
vs. Input Voltage
Enable ON
Enable OFF


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