MIC2164_10 Datasheet, PDF (7/39 Pages) Micrel Semiconductor – Synchronous Buck Controllers Featuring Adaptive On-Time Control 28V Input, Constant Frequency

Micrel, Inc.
Typical Characteristics (Continued)
MIC2164-3
Switching Frequency vs. Load
1150
1120
1090
1060
1030
1000
970
940
910
VHSD=12V
VIN=5V
880
850
0
2
4
6
8
10
OUTPUT CURRENT (A)
MIC2164
Switching Frequency vs. VIN
350
340
330
320
310
300
290
280
VHSD=12V
270
260
250
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
MIC2164-3
Switching Frequency vs. VIN
1150
1120
1090
1060
1030
1000
970
940
VHSD=12V
910
880
850
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
MIC2164
Switching Frequency vs. VHSD
350
340
330
320
VIN=5V
310
300
290
280
270
260
250
3
8
13
18
23
28
HSD VOLTAGE (V)
MIC2164-3
Switching Frequency vs. VHSD
1150
1120
1090
1060
VIN=5V
1030
1000
970
940
910
880
850
3
8
13
18
23
28
HSD VOLTAGE (V)
MIC2164 Switching Frequency
vs. Temperature
350
340
330
320
310
300
290
280
270
VIN=5V
260
250
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
MIC2164-3 Switching
Frequency vs. Temperature
1150
1120
1090
1060
1030
1000
970
940
910
VIN=5V
880
850
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
Current Limit Threshold vs.
Feedback Voltage Percentage
150
135
120
105
90
75
60
45
30
VIN=5V
15
0
0 10 20 30 40 50 60 70 80 90 100
Feedback Voltage Percentage (%)
September 2010
7
MIC2164/-2/-3/C
MIC2164-2
Switching Frequency vs. VIN
700
680
660
640
620
600
580
560
VHSD=12V
540
520
500
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
MIC2164-2
Switching Frequency vs. VHSD
700
680
660
VIN=5V
640
VOUT=2.5V
620
600
580
560
540
520
500
3
8
13
18
23
28
HSD VOLTAGE (V)
MIC2164-2 Switching
Frequency vs. Temperature
700
680
660
640
620
600
580
560
540
VIN=5V
520
500
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
Current Limit Threshold
vs. Temperature
150
135
120
105
90
VFB=0.8V
75
VFB=0V
60
45
30
15
0
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
M9999-091310-D