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MIC4690 Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC4690
Description  500kHz 1A SuperSwitcher Buck Regulator
PDF  12 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC4690 Datasheet(HTML) 5 Page - Micrel Semiconductor

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June 2001
5
MIC4690
MIC4690
Micrel
Typical Characteristics
1.223
1.225
1.227
1.229
1.231
1.233
1.235
1.237
1.239
1.241
1.243
-40 -20 0 20 40 60 80 100120140
TEMPERTURE (
°C)
Reference Voltage
vs. Temperature
V
IN = 12V
V
OUT = 5V
I
OUT = 100mA
7.6
7.7
7.8
7.9
8
8.1
8.2
8.3
8.4
8.5
8.6
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (
°C)
Quiescent Current
vs. Temperature
V
IN = 12.0V
V
OUT = 5.0V
I
OUT = 0
0
10
20
30
40
50
60
70
80
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Efficiency
vs. Input Voltage
V
OUT = 5V
I
OUT = 1A
0
100
200
300
400
500
600
-50
0
50
100
150
Temperature (
°C)
Frequency vs.
Temperature
V
IN = 12V
V
OUT = 5V
I
OUT = 100mA
0
50
100
150
200
250
300
-50
0
50
100
150
Temperature (
°C)
Frequency Foldback
vs. Temperature
V
IN = 12V
V
OUT = 5V
I
OUT = 100mA
5.000
5.005
5.010
5.015
5.020
5.025
0
0.2 0.4 0.6 0.8
1
1.2 1.4
OUTPUT CURRENT (A)
Load Regulation
V
IN = 12V
V
OUT = 5V
4.96
4.98
5.00
5.02
5.04
5.06
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Line Regulation
V
IN = 12V
V
OUT = 5V
I
OUT = 500mA
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (
°C)
Shutdown Current
vs. Temperature
V
SHDN = VIN
= 12V
V
OUT
= 5V
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
-40
0
40
80
120
160
TEMPERATURE (
°C)
Shutdown Hysteresis
vs. Temperature
ON
OFF
V
IN = 12.0V
V
OUT = 5.0V
I
OUT = 100mA
68
70
72
74
76
78
80
0
0.2 0.4 0.6 0.8
1
1.2 1.4
OUTPUT CURRENT (A)
Efficiency vs.
Output Current
V
IN = 12.0V
V
OUT = 5.0V



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