MP2144 – 2A, 5.5V, 1.2MHz. 40μA IQ, SYNCHRONOUS STEP-DOWN SWITCHER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 5V, VOUT = 1.2V, L = 1.0µH, COUT=22µF, TA = 25°C, unless otherwise noted.
Quiescent Current vs.
Input Voltage
Shutdown Current vs.
Input Voltage
Load Regulation
100
80
60
40
20
0
0.003
0.0025
0.002
0.0015
0.001
0.0005
0
2
2.5
3
3.5
4
4.5
5
5.5
6
2
2.5
3
3.5
4
4.5
5
5.5
6
0
0.5
1
1.5
2
LOAD CURRENT (A)
Line Regulation
Efficiency vs.I
OUT
VOUT=1.2V
100
90
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
0.001 0.01
0.1
IOUT(A)
1
10
2.0
3.0
4.0
5.0
6.0
0
0.5
1
1.5
2
OUTPUT CURRENT (A)
110
100
90
80
70
60
50
40
30
20
10
0
0.001
0.01
0.1
1
10
IOUT(A)
MP2144 Rev. 1.03
12/20/2012
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