MAX1966 データシートの表示（PDF） - Maxim Integrated
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MAX1966 Datasheet PDF : 15 Pages
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Low-Cost Voltage-Mode PWM
Step-Down Controllers
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
EFFICIENCY vs. LOAD CURRENT (3.3V/5A)
MAX1967
100
90
VIN = 5V
80
VIN = 12V
FREQUENCY vs. INPUT VOLTAGE
104
MAX1966
VOUT = 1.8V
102
FREQUENCY vs. TEMPERATURE
130
120
110
70
60
50
0.01
VIN = 24V
MAX1967
FIGURE 2
0.1
1
10
LOAD CURRENT (A)
100
MAX1967
VOUT = 3.3V
98
2.5
7.0 11.5 16.0 20.5 25.0
INPUT VOLTAGE (V)
100
90
80
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
MAX1966 SUPPLY CURRENT
vs. INPUT VOLTAGE
10
8
6
4
2
MAX1966
VOUT = 1.8V
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
LOAD STEP RESPONSE
VIN = 5.0V, VOUT = 1.8V
L = 22µH
ILOAD = 0.1 TO 3A
VOUT
200mV/div
IOUT
INDUCTOR
CURRENT
400ms/div
2A/div
2A/div
MAX1967 SUPPLY CURRENT
vs. INPUT VOLTAGE
10
8
6
4
2
MAX1967
VOUT = 3.3V
0
4
9
14
19
24
INPUT VOLTAGE (V)
START-UP WAVEFORM
VIN
VOUT
INDUCTOR
CURRENT
2V/div
1V/div
2ms/div
1A/div
NO LOAD
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