MIC4742 Datasheet, PDF (6/23 Pages) Micrel Semiconductor – 2 MHz Dual 2A Integrated Switch Buck Regulator

Micrel, Inc.
Typical Characteristics (continue)
Line Regulation
0.9950
0.9948
0.9946
0.9944
0.9942
0.9940
0.9938
0.9936
0.9934
0.9932
0.9930
2.9 3.3 3.7 4.1 4.5 4.9 5.3
SUPPLY VOLTAGE (V)
Feedback Voltage
vs. Temperature
0.605
0.604
0.603
0.602
0.601
0.600
0.599
0.598
0.597
0.596
0.595
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
Feedback Voltage
vs. Supply Voltage
0.8
Quiescent Current
vs. Supply Voltage
1600
0.6
1200
0.4
800
0.2
400
0.0
0
1
2
3
4
5
SUPPLY VOLTAGE (V)
Rdson
vs. Temperature
180
170
160
150
140
130
120
110
100
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
0
0.00 1.00 2.00 3.00 4.00 5.00
SUPPLY VOLTAGE (V)
Enable Threshold
vs. Supply Voltage
1.20
1.00
0.80
0.60
0.40
0.20
0.00
2.9 3.3 3.7 4.1 4.5 4.9 5.3
SUPPLY VOLTAGE (V)
MIC4742
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
-40
Frequency
vs. Temperature
-20 0 20 40 60 80 100 120
TEMPERATURE (°C)
180
170
160
150
140
130
120
110
100
2.9
Rdson
vs. Supply Voltage
3.3 3.7 4.1 4.5 4.9 5.3
SUPPLY VOLTAGE (V)
Enable Threshold
vs. Temperature
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
March 2009
6
M9999-030209-D