MIC2101_13 Datasheet, PDF (7/36 Pages) Micrel Semiconductor – 38V, Synchronous Buck Controllers Featuring Adaptive On-Time Control

Micrel, Inc.
Typical Characteristics (Continued)
Load Regulation
vs. Temperature (MIC2101)
0.4%
0.3%
0.2%
VIN = 12V
VOUT = 3.3V
IOUT = 0 to 12A
0.1%
0.0%
-0.1%
-0.2%
-0.3%
-50
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Line Regulation
vs. Temperature (MIC2101)
0.0%
-0.2%
-0.4%
-0.6%
-0.8%
-1.0%
-1.2%
-1.4%
-1.6%
-1.8%
-50
VIN = 5V to 38V
VOUT = 3.3V
IOUT = 0A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
MIC2101/02
0.808
Feedback Voltage
vs. Output Current (MIC2101)
0.804
0.800
0.796
VIN = 12V
VOUT = 3.3V
0.792
0 1 2 3 4 5 6 7 8 9 10 11 12
OUTPUT CURRENT (A)
Line Regulation
vs. Output Current (MIC2101)
3.0%
2.0%
1.0%
0.0%
-1.0%
VIN = 5V to 38V
VOUT = 3.3V
-2.0%
-3.0%
0 1 2 3 4 5 6 7 8 9 10 11 12
OUTPUT CURRENT (A)
Efficiency (V_IN = 5V)
100 ^{vs. Output Current (MIC2101)}
90
3.3V
80
2.5V
1.8V
70
1.5V
60
1.2V
1.0V
50
0.9V
0.8V
40
30
20
10
fSW = 600kHz (CCM)
0
0
4
8
12
16
OUTPUT CURRENT (A)
Efficiency (V_IN =12V)
vs. Output Current (MIC2101)
100
90
5.0V
80
3.3V
2.5V
70
1.8V
60
1.2V
0.8V
50
40
30
20
10
fSW = 600kHz (CCM)
0
0 2 4 6 8 10 12 14 16
OUTPUT CURRENT (A)
Efficiency (V_IN = 18V)
vs. Output Current (MIC2101)
100
90
5.0V
80
3.3V
70
2.5V
1.8V
60
1.2V
0.8V
50
40
30
20
fSW = 600kHz (CCM)
10
0
0 2 4 6 8 10 12 14 16
OUTPUT CURRENT (A)
Efficiency (V_IN = 24V)
vs. Output Current (MIC2101)
100
90
5.0V
80
3.3V
70
2.5V
1.8V
60
1.2V
0.8V
50
40
30
20
10
fSW = 600kHz (CCM)
0
0 2 4 6 8 10 12 14 16
OUTPUT CURRENT (A)
Efficiency (V_IN = 38V)
vs. Output Current (MIC2101)
100
90
80
5.0V
70
3.3V
2.5V
60
1.8V
50
1.2V
0.8V
40
30
20
10
0
0
fSW = 600kHz (CCM)
2 4 6 8 10 12 14 16
OUTPUT CURRENT (A)
November 13, 2013
7
Revision 2.0