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MIC22205 Datasheet, PDF (6/29 Pages) Micrel Semiconductor – 2A, Integrated, Switch, High-Efficiency
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Micrel, Inc.
Typical Characteristics
VIN Operating Supply Current
vs. Input Voltage
16
VOUT = 1.8V
14
IOUT = 0A
SWITCHING
12
10
8
6
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Load Regulation
vs. Input Voltage
0.6%
0.4%
VOUT = 1.8V
IOUT = 0A to 2A
0.2%
0.0%
-0.2%
-0.4%
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Switching Frequency
vs. Input Voltage
1100
1050
VOUT = 1.8V
IOUT = 0A
1000
950
900
850
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
MIC22205
VIN Shutdown Current
vs. Input Voltage
10
VEN/DLY = 0V
8
6
4
2
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
10
8
VOUT = 1.8V
6
4
2
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Enable Input Current
vs. Input Voltage
1.50
1.25
VEN/DLY = VIN
1.00
0.75
0.50
0.25
0.00
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Feedback Voltage
vs. Input Voltage
0.724
0.716
0.708
VOUT = 1.8V
0.700
0.692
0.684
0.676
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Enable Threshold
vs. Input Voltage
1.50
1.40
Rising
1.30
1.20
Falling
1.10
1.00
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Power Good Threshold/VREF
Ratio vs. Input Voltage
14.0
13.0
12.0
11.0
10.0
9.0
VREF = 0.7V
8.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
August 2011
6
M9999-082511-A
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