MIC2164 Datasheet, PDF (5/36 Pages) Micrel Semiconductor – Constant Frequency, Synchronous Buck Controllers Featuring Adaptive On-Time Control

Micrel, Inc.
Typical Characteristics
100
95
90
85
80
75
70
65
60
55
50
0
MIC2164
12V to 1.5V Efficiency
VIN=5V
4
8
12
16
20
OUTPUT CURRENT (A)
100
95
90
85
80
75
70
65
60
55
50
0
MIC2164-2
12V to 3.3V Efficiency
VIN=5V
3
6
9
12
15
OUTPUT CURRENT (A)
0.85
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
0.75
0
Feedback Voltage vs. Load
VHSD=12V
VIN=5V
4
8
12
16
20
OUTPUT CURRENT (A)
0.810
0.808
0.806
0.804
0.802
0.800
0.798
0.796
0.794
0.792
0.790
-40
Feedback Voltage
vs. Temperature
VIN=5V
-20 0 20 40 60 80 100 120
TEMPERATURE (°C)
September 2009
100
95
90
85
80
75
70
65
60
55
50
0
MIC2164
12V to 3.3V Efficiency
VIN=5V
4
8
12
16
20
OUTPUT CURRENT (A)
100
95
90
85
80
75
70
65
60
55
50
0
MIC2164-3
12V to 1.5V Efficiency
VIN=5V
2
4
6
8
10
OUTPUT CURRENT (A)
0.85
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
0.75
3
Feedback Voltage
vs. Input Voltage
VHSD=12V
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
MIC2164
Switching Frequency vs. Load
350
340
330
320
310
300
290
280
270
VHSD=12V
VIN=5V
260
250
0
4
8
12
16
20
OUTPUT CURRENT (A)
5
MIC2164/-2/-3
100
95
90
85
80
75
70
65
60
55
50
0
MIC2164-2
12V to 1.5V Efficiency
VIN=5V
3
6
9
12
15
OUTPUT CURRENT (A)
100
95
90
85
80
75
70
65
60
55
50
0
MIC2164-3
12V to 3.3V Efficiency
VIN=5V
2
4
6
8
10
OUTPUT CURRENT (A)
0.85
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
0.75
3
Feedback Voltage
vs. HSD Voltage
VIN=5V
8
13
18
23
28
HSD VOLTAGE (V)
MIC2164-2
Switching Frequency vs. Load
700
680
660
640
620
600
580
560
540
VHSD=12V
520
VIN=5V
500
0
3
6
9
12
15
OUTPUT CURRENT (A)
M9999-090409-B