AMS4123
3A 20V Step-Down Converter + 1A LDO
Typical Characteristics
Efficiency VSW out=5V, L=10µH,
B340LB Schottky
Load Regulation VSW out =5V, L=10µH
1.0
100
90
80
70
60
50
40
30
20
Vin =12V
0.6
Vin =12V
0.2
Vin =23V
-0.2
-0.6
-1.0
Vin =23V
0.01
0.1
1
10
0.01
0.1
1
10
Output Current (A)
Output Current (A)
Efficiency VSW out=3.3V,
L=10µH, B340LB Schottky
Load Regulation VSW out=3.3V, L=10µH
1.0
0.6
100
90
80
70
60
50
40
30
20
Vin =12V
Vin =23V
Vin =12V
0.2
Vin =23V
-0.2
-0.6
-1.0
0.01
0.1
1
10
0.01
0.1
1
10
Output Current (A)
Output Current (A)
Efficiency Vsw out=2.5V, L=10µH,
B340LB Schottky
Load Regulation Vsw out=2.5V, L=10 µH
1.0
0.6
100
90
80
70
60
50
40
30
20
Vin =12V
Vin =23V
0.2
-0.2
-0.6
-1.0
Vin =23V
Vin =12V
0.01
0.1
1
10
0.01
0.1
1
10
Output Current (A)
Output Current (A)
3/5/2010
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Fax (925) 443-0723
AMS [ Advanced Monolithic Systems Ltd ]
