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| MIC23051_09 Datasheet, PDF (4/13 Pages) Micrel Semiconductor – 4MHz PWM Buck Regulator with HyperLight Load and Voltage Scaling | |||
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Micrel, Inc.
Typical Characteristics
Efficiency VOUT = 1.8V
100
90
VIN = 2.7V
80
VIN = 3.6V
VIN = 3.3V
70
60
VOUT = 1.8V
L = 1µH
501
10
100
1000
OUTPUT CURRENT (mA)
Quiescent Current
vs. Temperature
40
30
20
10
VIN = 3.6V
VOUT = 1.8V
0
20 40 60 80
TEMPERATURE (°C)
Switching Frequency
vs. Input Voltage
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.7
VIN = 3.6V
VOUT = 1.8V
Load = 150mA
3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
Output Voltage
vs. Input Voltage
1.90
1.85
1.80
1.75
Load = 20mA
1.720.7 3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
July 2009
Efficiency VOUT = 1.2V
90
VIN = 2.7V
80
VIN = 3.6V VIN = 3.3V
70
60
VOUT = 1.2V
L = 1µH
50
1
10
100
1000
OUTPUT CURRENT (mA)
Quiescent Current
vs. Input Voltage
50
45
40
35
30
25
20
15
10
VIN = 3.6V
5
VOUT = 1.8V
No Load
0
2.7 3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
Feedback Voltage
vs. Temperature
0.80
0.78
0.76
0.74
0.72
0.70
0.68
0.66
0.64
0.62
0.60
VIN = 3.6V
VOUT = 1.8V
No Load
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Load
1.90
1.85
1.8
1.75
1.70
0
VIN = 3.6V
100 200 300 400 500 600
LOAD (mA)
4
MIC23051
Efficiency VOUT = 1V
90
VIN = 2.7V
80
VIN = 3.6V
70
VIN = 3.3V
60
VOUT = 1V
L = 1µH
50
1
10
100
1000
OUTPUT CURRENT (mA)
Switching Frequency
vs. Temperature
5.5
5.0
4.5
4.0
3.5
VIN = 3.6V
3.0
VOUT = 1.8V
Load = 150mA
2.5
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Temperature
1.90
1.85
1.80
1.75
1.70
VIN = 3.6V
VOUT = 1.8V
No Load
20 40 60 80
TEMPERATURE (°C)
M9999â070809-F
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