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MIC2285 Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC2285
Description  8MHz PWM Synchronous Buck Regulator with LDO Standby Mode
PDF  14 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2285 Datasheet(HTML) 5 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2285
January 2006
5
M9999-012406
www.micrel.com
Typical Characteristics – PWM Mode
0
10
20
30
40
50
60
70
80
90
100
OUTPUT CURRENT (mA)
2.5VOUT Efficiency
0
100
200
300
400
500
VIN=3.2V
VIN=3.6V
VIN=4.2V
0
10
20
30
40
50
60
70
80
90
100
OUTPUT CURRENT (mA)
1.8VOUT Efficiency
0
100
200
300
400
500
VIN=3.2V
VIN=3.6V
VIN=4.2V
0
10
20
30
40
50
60
70
80
90
100
OUTPUT CURRENT (mA)
1.5VOUT Efficiency
0
100
200
300
400
500
VIN=3.2V
VIN=3.6V
VIN=4.2V
0
10
20
30
40
50
60
70
80
90
100
OUTPUT CURRENT (mA)
0
100
200
300
400
500
1.2VOUT Efficiency
VIN=3.2V
VIN=3.6V
VIN=4.2V
0
10
20
30
40
50
60
70
80
90
100
OUTPUT CURRENT (mA)
1.0VOUT Efficiency
0
100
200
300
400
500
VIN=3.2V
VIN=3.6V
VIN=4.2V
0.990
0
Load Regulation
0.994
0.998
1.002
1.006
1.010
1.014
1.018
OUTPUT CURRENT (mA)
100
200
300
400
500
VIN=3.6V
LowQ=VIN
600
700
800
900
1000
1100
2.7
INPUT VOLTAGE (V)
Quiescent Current
vs. Input Voltage
3.1 3.5 3.9 4.3 4.7 5.1 5.5
7.0
7.5
8.0
8.5
9.0
2.7
INPUT VOLTAGE (V)
Frequency
vs. Input Voltage
3.1 3.5 3.9 4.3 4.7 5.1 5.5
0
200
400
600
800
1000
1200
2.7
3.4
4.1
4.8
5.5
SUPPLY VOLTAGE (V)
Peak Current Limit
vs. Supply Voltage
LowQ = V
IN
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
2.7
3.4
4.1
4.8
5.5
SUPPLY VOLTAGE (V)
Enable Threshold
vs. Supply Voltage
LowQ = V
IN



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