MAX1953 データシートの表示（PDF） - Maxim Integrated
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MAX1953 Datasheet PDF : 22 Pages
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Low-Cost, High-Frequency, Current-Mode PWM
Buck Controller
(TA = +25°C, unless otherwise noted.)
MAX1957
OUTPUT VOLTAGE vs. LOAD CURRENT
1.35
1.30
1.25
VIN = 5V
1.20
1.15
-3
CIRCUIT OF FIGURE 3
-2 -1 0 1 2 3
LOAD CURRENT (A)
Typical Operating Characteristics (continued)
MAX1953
OUTPUT VOLTAGE vs. INPUT VOLTAGE
2.60
2.55
ILOAD = 3A
2.50
ILOAD = 0
2.45
2.40
3.0
CIRCUIT OF FIGURE 1
3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MAX1954
OUTPUT VOLTAGE vs. INPUT VOLTAGE
1.76
1.74
1.72
ILOAD = 0
1.70
1.68
ILOAD = 5A
1.66
1.64
3.0
CIRCUIT OF FIGURE 2
3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MAX1954
OUTPUT VOLTAGE vs. INPUT VOLTAGE
2.52
2.51
ILOAD = 0
2.50
2.49
ILOAD = 5A
2.48
2.47
2.46
3.0
CIRCUIT OF FIGURE 2
3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MAX1953
FREQUENCY vs. INPUT VOLTAGE
1.06 VOUT = 2.5V
1.04
TA = -40°C
1.02
1.00
TA = +85°C
0.98
TA = +25°C
0.96
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MAX1957
OUTPUT VOLTAGE vs. INPUT VOLTAGE
1.29
1.27
ILOAD = 0
1.25
1.23
ILOAD = 3A
1.21
1.19
3.0
CIRCUIT OF FIGURE 3
3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MAX1954/MAX1957
FREQUENCY vs. INPUT VOLTAGE
320
VOUT = 1.25V
315
310
305
TA = -40°C
300
295 TA = +25°C
290
285
280
TA = +85°C
275
270
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
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