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MIC2111B Datasheet, PDF (9/35 Pages) Micrel Semiconductor – High-Performance, Multi-Mode, Step-Down Controller
◁
Micrel, Inc.
Typical Characteristics
Refer to Typical Application Schematic.
Efficiency vs. Output Current
(VOUT = 1.2V)
100
90
80
8VIN
70
60
12VIN
50
16VIN
40
30
20
10
0
0
5
10
15
20
25
OUTPUT CURRENT (A)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
-50
EN Threshold
vs. Temperature
EN THRESHOLD
0
50
100
150
TEMPERATURE (˚C)
Error Amplifier Transconductance
vs. VCC (T = 25°C)
3
2.8
2.6
2.4
2.2
2
1.8
1.6
1.4
1.2
1
3
4
5
6
VCC (V)
MIC2111B
Efficiency vs. Output Current
(VIN = 12V)
100
90
80
70
2.5V VOUT
60
1.5V VOUT
50
40
1.2V VOUT
30
1.0V VOUT
20
10
0
0
5
10
15
20
25
OUTPUT CURRENT (A)
ISEN Amplifier Gain
vs. VCC (MIC2111B)
30
28
ISEN AMPLIFIER GAIN
26
24
22
20
18
16
14
12
10
3
4
5
6
VCC (V)
Error Amplifier Transconductance
vs. Temperature (VCC = 5V)
3
2.8
2.6
2.4
2.2
2
1.8
1.6
1.4
1.2
1
-50
0
50
100
150
TEMPERATURE (˚C)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
3
EN Threshold
vs. VCC Change
EN THRESHOLD
4
5
6
VCC (V)
ISEN Amplifier Gain
vs. Temperature (MIC2111B)
35
30
ISEN AMPLIFIER GAIN
25
20
15
10
-50
0
50
100
150
TEMPERATURE (˚C)
Feedback Voltage
vs. VCC
0.7
0.65
0.6
0.55
0.5
3
3.5
4
4.5
5
5.5
6
VCC (V)
October 13, 2015
9
Revision 2.1
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