Low-Cost Voltage-Mode PWM
Step-Down Controllers
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
EFFICIENCY vs. LOAD CURRENT
(1.2V/3A)
100
VIN = 3.3V
90
80
VIN = 5.0V
70
60
50
0.01
MAX1966
FIGURE 1
0.1
1
10
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT (1.8V/5A)
MAX1966
100
EFFICIENCY vs. LOAD CURRENT (1.8V/3A)
MAX1966
100
VIN = 3.3V
90
80
VIN = 5.0V
70
60
50
0.01
MAX1966
FIGURE 1
0.1
1
10
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT (1.2V/3A)
MAX1967
100
EFFICIENCY vs. LOAD CURRENT (1.2V/5A)
MAX1966
100
VIN = 5.0V
90
80
VIN = 3.3V
VIN = 3.3V
70
60
50
0.01
VIN = 5.0V
MAX1966
FIGURE 1
0.1
1
10
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT (1.8V/3A)
MAX1967
100
90
VIN = 3.3V
80
70
VIN = 5.0V
90
VIN = 5V
80
70
VIN = 12V
90
VIN = 5V
80
70
VIN = 12V
60
50
0.01
MAX1966
FIGURE 1
0.1
1
10
LOAD CURRENT (A)
60
50
0.01
MAX1967
FIGURE 2
0.1
1
10
LOAD CURRENT (A)
60
50
0.01
MAX1967
FIGURE 2
0.1
1
10
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT (3.3V/3A)
MAX1967
100
90
VIN = 5V
80
70
VIN = 12V
60
50
0.01
MAX1967
FIGURE 2
0.1
1
10
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT (1.2V/5A)
MAX1967
100
VIN = 5V
90
VIN = 5V
80
70
60
50
0.01
VIN = 12V
VIN = 20V
MAX1967
FIGURE 2
0.1
1
10
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT (1.8V/5A)
MAX1967
100
90
VIN = 5V
80
VIN = 12V
70
60
50
0.01
VIN = 20V
MAX1967
FIGURE 2
0.1
1
10
LOAD CURRENT (A)
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