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MIC2174 Scheda tecnica(PDF) 5 Page - Micrel Semiconductor

Il numero della parte MIC2174
Spiegazioni elettronici  300kHz, Synchronous Buck Controller 300kHz, Synchronous Buck Controller
PDF  24 Pages
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Produttore elettronici  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2174 Scheda tecnica(HTML) 5 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2174
September 2009
5
M9999-090409-B
Typical Characteristics
12V to 3.3V Efficiency
50
55
60
65
70
75
80
85
90
95
100
02
46
8
10
OUTPUT CURRENT (A)
VIN=5V
24V to 1.8V Efficiency
40
45
50
55
60
65
70
75
80
85
90
024
68
10
OUTPUT CURRENT (A)
VIN=5V
24V to 3.3V Efficiency
40
45
50
55
60
65
70
75
80
85
90
024
68
10
OUTPUT CURRENT (A)
VIN=5V
Feedback Voltage vs. Load
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
02
46
8
10
OUTPUT CURRENT (A)
VIN=5V
Feedback Voltage
vs. Input Voltage
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
33.5
4
4.5
55.5
INPUT VOLTAGE (V)
Feedback Voltage
vs. HSD Voltage
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
3
7
11
15
19
23
27
31
35
39
HSD VOLTAGE (V)
VIN=5V
Feedback Voltage
vs. Temperature
0.790
0.792
0.794
0.796
0.798
0.800
0.802
0.804
0.806
0.808
0.810
-40
-20
0
20
406080
100
120
TEMPERATURE (°C)
VIN=5V
Switching Frequency
vs. Load
250
260
270
280
290
300
310
320
330
340
350
02
46
8
10
OUTPUT CURRENT (A)
VHSD=24V
VIN=5V
VOUT=3.3V
Switching Frequency
vs. Input Voltage
250
260
270
280
290
300
310
320
330
340
350
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
VHSD=24V
VOUT=3.3V
Switching Frequency
vs. HSD Voltage
250
260
270
280
290
300
310
320
330
340
350
3
7
11
15
19
23
27
31
35
39
HSD VOLTAGE (V)
VIN=5V
VOUT=1.8V
Switching Frequency
vs. Temperature
250
260
270
280
290
300
310
320
330
340
350
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
VIN=5V
Current Limit Threshold vs.
Feedback Voltage Percentage
0
15
30
45
60
75
90
105
120
135
150
0
10
20
30
405060
7080
90 100
Feedback Voltage Percentage (%)



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